Crown Electronic Systems

Fixed Output DC Regulated Power Supply

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Specification

Input Voltage :    230V + 10% AC 50Hz

               Output Voltage                                         CURRENT(MAX)
                  5V/6V                                                             1A
                  5V/6V                                                             2A
                  5V/6V                                                             5A
                  12V/15V                                                         1A
                  12V/15V                                                         2A
                  12V/15V                                                         5A
                  24V                                                                1A
                  24V                                                                2A
                  24V                                                                5A
                  24V                                                                10A

LOAD REGULATION    :  + 0.05% From no load to Full Load.
LINE REGULATION     :  + 0.01% For +_ 10% Mains Variation.
RIPPLE                         :  Less than 1 mV.
PROTECTION              :  AGAINST SHORT CIRCUITS & OVER LOAD.

Fixed Output DC Regulated Power Supply

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For further details or requirements, Email us or send Enquiry




"CROWN" DC REGULATED POWER SUPPLY are Constant Voltage , Current Limit Type supplies have high regulation for Load & Line Voltage Variation. The supply are protected against short circuit , over load.

AF Power Output Meter

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For further details or requirements, Email us or send Enquiry



SPECIFICATION :
 Watt and dB indications
 Wide Audio Frequency Range.
 Wide Range of power measurement
“ CROWN " AF Power Output Meter is useful in measurement of power output and frequency response of amplifiers. The instrument is high performance and easy to operate. It indicates directly the power delivered by the equipment under test in watts as well as decibels. Built in precision resistors are provided as loads which may be switched out of circuit if required. The fully transistorised circuit provides reliability and compactness indispensable in the design, development and production of every type of audio equipment. It is very useful in determination of unknown source impedances, load requirements for maximum power transfer, frequency response etc.

Million Mega Ohm Meter

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"CROWN " MILLION MEGA OHM METER is an ideal instrument for measuring high resistance & insulation . Since it applies a high table , IC regulated , H.T. of 100 , 200 , 300 , 400 & 500V DC across the element under test , it serves the purpose of a Megger also . It erasures the insulation resistance of the sample under stress , by subjecting it to the set voltage . It has a measuring range of 1 mega ohm to 10 million mega ohms fc in six decade ranges & is capable 13 of reading upto 10 million mega ohm (10 ohms) with accuracy . Op - Amp ensure low drift , low input bias current & high stable performance . Aseparate Rx - NORM - HT switch with amber color lamp indication facilitates to link or de - link HT with terminal . The HT can also check by & set accuracy in HTposition by observing FSD & using fine & coarse HTcontrols .

Electronic Volt - OHM Meter (VTVM)

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Useful For High Frequency AC V Measurement 1.5 V FSD to 1500V FSD AC/DC V Upto 1000 M Ohm Resistance IC Circuit for Stable Reading.

Function Generator

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Specification :

FREQUENCY RANGE    :   0.1 Hz to 1 MHz in six decade range
DEAL ACCURACY          :  + 5% of range
AMPLITUDE                     0 - 20V P/P for all function
WAVE FORMS                 SINE , SQUARE & TRIANGLE , TTL
SQUARE WAVE (SEPARATE O / P)
SINE WAVE DISTORTION  :  Less than 1% from 100 Hz to 100KHz
SQUARE WAVE DUTY CYCLE  : 49% To 51%
SQUARE WAVE RISE TIME   Less than 100 nano Sec. At maximum amplitude
OUTPUT IMPEDANCE     :   600 Ohm + 5%
POWER REQUIRED : 230V AC + 10% 

Function Generator 0.1Hz To 1MHz

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CROWN” FUNCTION  GENERATOR is capable of providing SINE , SQUARE , TRIANGLE Wave form . It has linear frequency scale very low Distortion & constant signal amplitude with the output signal symmetry about Zero . The DC coupled output provides square wave without any appreciable Sag at
low frequency . It has a maximum 20V P/P amplitude . The output is protected against short circuit . It has a offset control provided to shift the base line of signal by + 10V . The continuously variable DC offset control further enhance the versatility of the instrument . The equipment is used in Audio Electronics & other Laboratory & Research work .

DC-30MHz Dual Trace Oscilloscope

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FEATURES:

*           30MHz
*           Expanded vertical sensitivity to 10V~20V/div.
*           ALT Triggering Function.
*           Encoder for sweep & vertical sensitivity switch.
*           10 times sweep magnification.
*           TV synchronization, X-Y mode.
*           Triggering level lock function, automatic synchronize function.

DC-20MHz Dual Trace Oscilloscope

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SPECIFICATION

CRT TYPE                                 :           6-inch rectangular with internal graticule 8x10div (1div=1cm).

VERTICAL :

Y-ATT SWITCH                           :           Encoder.
SENSITIVITY(12 step)                 :           X1 - +3% - 5mV~5V/div.
BAND WIDTH                             :           X1 - DC (AC 10Hz)~20MHz (-3dB).
RISE TIME                                  :           X1 - £ 17.5ns - £ 8.75/7ns.
                                                                X5 - £ 50ns - £ 25/23ns.
INPUT IMPEDANCE                   :           »1MO/25PF.     
MAX. INPUT VOLT.                    :           300V (DC + AC P-P)     
INPUT COUPLING                     :           AC, DC, GND.  
VERT. OPERATION MODE      :           Ch1, Ch2, DUAL (ALT/CHOP) ADD, Ch2 INV.     

HORIZONTAL :

SWEEP TIME                            :           0.2us~0.5s/div +3%: MAG x 10:100ns~50ms/div +5%.

TRIGGER SYSTEMS :

MODE                                       :           AUTO, NORM, TV-V, TV-H.
LEVEL LOCK                           :           OK.
SOURCE                                 :           Ch1, Ch2,  LINE, EXT.
COUPLING                              :           AC.
SLOPE                                    :           +ve or -ve.

X-Y AXIS :

SENSITIVITY                              :           5mV~ 5V/div, +4%.
X-AXIS BANDWIDTH                 :           DC~ 500KHz.
PHASE ERROR                        :           £ 30 DC~ 50KHz

OUTPUT SIGNAL  :                  

Ch1 OUTPUT                             :           OK.
CALIBRATOR O/P                     :           1KHz square wave, 2V p-p +2%



DC-20MHz Dual Trace Oscilloscope

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For further details or requirements, Email us or send Enquiry




Features :

 * 20MHz
 * Expanded vertical sensitivity to 10V~20V/div.
 * ALT Triggering Function.
 * Encoder for sweep & vertical sensitivity switch.
 * 10 times sweep magnification.
 * TV synchronization, X-Y mode.
 * Triggering level lock function, automatic synchronize function.

DC-10MHz Single Trace Portable Oscilloscope

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For further details or requirements, Email us or send Enquiry

SPECIFICATIONS:

VERTICAL SYSTEM :

Sensitivity                                   :           5 mV / DIV ~ 5V / DIV , + 3%
Trimming Ratio                          :           > 2.5 : 1
Rise Time                                  :           < 35 ns
Band Width (-3db)                     :           DC : 0 ~ 10MHz , C : 10Hz ~ 10MHz
Input Impedance                        :           1MW  + 3% , 30 pF , 5 pFW
Maximum Input Voltage             :           400 V pk

HORIZONTAL SYSTEM :

Sweep Time                              :           0.1 s / DIV ~ 0.1ms / DIV , + 3%
Trimming Ratio                         :           > 2.5 : 1                       

TRIGGER SYSTEM :

Trigger Sensitivity                       :          INT : 1 DIV , EXT : 0.3V
Ext. Trigger Input Impedance      :         1MW  + 3% , 30 pF , +5 pF
Ext. Trigger Max. Input Voltage   :          400 V pk
Trigger Sources                         :           INT , LINE , EXT
Trigger Mode                              :           NORM , AUTO , TV

MODE :

Sensitivity                                   :         0.5V / DIV
Bandwidth (-3db)                       :         10 Hz ~ 500KHz

CALIBRATION SIGNAL :

Waveform                                 :           Symmetric Square Wave
Range                                       :           0.5V + 2%
Frequency                                 :           1KHz + 2%

CRT :

Display Area                             :           8 X 100 DIV (1 DIV = 6mm)
Acceleration Voltage                 :           1200 V
Display Color                            :           Green
Power                                       :           220V , + 10% , 50 Hz

DC-10MHz Single Trace Portable Oscilloscope

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“CROWN” Oscilloscope is a portable oscilloscope with frequency bandwidth of 0 - 10MHz & sensitivity of 5mV / DIV ~ 5V / DIV . Equipped with 10:1 probe which makes the sensitivity up to 50V / div . Sweep at 0.1s / DIV ~ 1µs / DIV on horizontal system . The oscilloscope is easy to operate & highly reliable . It is an ideal instrument for research , production , education.

Sine Square Audio Oscillator 1Hz to 1MHz

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SPECIFICATION:

FREQUENCY RANGE           :       1 Hz to 1 MHz in six decade steps

DIAL ACCURACY                 :      ± 3%

WAVE FORM                        :      SINE & SQUARE WAVE

OUTPUT VOLTAGE               :     (1) Sine Wave 0 - 10V in 3 decade steps of                                                               10V , 1V & 0.1V with continuously                                                                     variable control
                                                   (2) Square Wave 0 - 15V p/p 
                                                        Continuously Variable

SINE WAVE DISTORTION     :       Less than 0.5% from 100Hz to 100KHz

SQUARE WAVE RISE TIME    :       Less than 100 neno sec. at max.                                                                       output

SQUARE WAVE SYMMETRY   :       Duty Factor variable from 0% to 80%

OUTPUT IMPEDANCE            :      600 Ohm ± 5%

POWER                                   :      230V AC ± 10 %


AF POWER OUTPUT METER

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For further details or requirements, Email us or send Enquiry





* Watt and dB indications
* Wide Audio Frequency Range
* Wide Range of power measurement

      “CROWN" made AF Power Output Meter is useful in measurement of power output and frequency response of amplifiers. The instrument is high performance and easy to operate. It indicates directly the power delivered by the equipment under test in watts as well as decibels. 
Built in precision resistors are provided as loads which may be switched out of circuit if required. The fully transistorised circuit provides reliability and compactness indispensable in the design, development and production of every type of audio equipment. It is very useful in determination 
of unknown source impedances, load requirements for maximum power transfer, frequency response etc.

TECHNICAL SPECIFICATION :

WATTAGE RANGE     :     Upto 150 Watt in five range 15mW, 150mW,1.5W, 15W 
                                           & 150W

DB RANGE                  :     -5dB to +51dB (0dB -1mW into 600 ohms)

IMPEDANCE                :     4, 8, 16 & 600 ohms. For internal load 1% precision 
                                            power resistors are provided with 100 watt continuous 
                                            and 150 watt intermittent rating

ACCURACY                 :     Power +1dB at +1 KHz Impedance, +1% Hat 1 KHz
  
FREQUENCY RANGE  :     10Hz to 100 KHz within 1 dB

POWER SUPPLY          :     190-250 ac 40-60 Hz


ELECTRONIC VOLT OHM METER (VTVM)

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SPECIFICATION:

DC VOLTAGE

RANGE                                    :      1.5V To 1500V FSD in 7 range of 1.5V , 5V , 15V , 
                                                        50V , 150V , 500V , 1500V
ACCURACY                             :       ± 3% of range
INPUT IMPEDANCE                :      10 Mohm
OVERLOAD PROTECTION     :      1500V DC

AC VOLTAGE

RANGE                                       :    1.5V To 1500V FSD in 7 range of 1.5V , 5V , 15V ,
                                                          50V , 150V , 500V , 1500V
ACCURACY                                :   ± 5% of range
INPUT IMPEDANCE                   :   1 Mohm
FREQUENCY RESPONSE           :   10 Hz to 500 Khz
ACCURACY                                :    ± 10% upto 10 Mhz
MAX. INPUT VOLTAGE             :    200V RMS upto 150V Range , 1500V RMS on 
                                                          500V & 1500V Range

OHMS
RANGE                                        :     0.2 Ohm to 1000 M ohm in 7 decade ranges with
                                                           10 Ohm to 10 Mohm center Scale
ACCURACY                                :     ± 5% of mid Scale
POWER SUPPLY                         :     230V ± 10% , 50 Hz


FUNCTION GENERATOR

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           “CROWN” made FUNCTION GENERATOR is capable of providing SINE , SQUARE , TRIANGLE Wave form . It has linear frequency scale very low Distortion & constant signal amplitude with the output signal symmetry about Zero . The DC coupled output provides square wave without any appreciable Sag at low frequency . It has a maximum 20V P/P amplitude . The
output is protected against short circuit . It has a offset control provided to shift the base line of signal by + 10V . The continuously variable DC offset control further enhance the
versatility of the instrument . The equipment is used in Audio Electronics & other Laboratory & Research work .

SPECIFICATION:

FREQUENCY RANGE               :       0.1 Hz to 1 MHz in six decade range

DEAL ACCURACY                    :       + 5% of range

AMPLITUDE                              :       0 - 20V P/P for all function

WAVE FORMS                            :      SINE , SQUARE & TRIANGLE , TTL
                                                           SQUARE WAVE (SEPARATE O / P)

SINE WAVE DISTORTION          :      Less than 1% from 100 Hz to 100 KHz

SQUARE WAVE DUTY CYCLE   :     49% To 51%

SQUARE WAVE RISE TIME        :      Less than 100 nano Sec. At maximum amplitude

OUTPUT IMPEDANCE              :       600 Ohm + 5%

POWER REQUIRED                   :       230V AC + 10%


SINGLE PHASE MULTIFUNCTION METER

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       "CROWN" made SINGLE PHASE MULTIFUNCTION METER is developed to make the testing Simple,Faster, Accurate and Reliable with its high performing DSP based circuitry and user friendly operational features. It is useful for various industries in Electrical Machines (like Transformers, Motors, Stabilizer), Power Electronics (like UPS, Inverter, rectifiers) and Lighting devices (CFL, Ballast, LEDs). The high speed simultaneous sampling using 24-bit ADC 
ensures True RMS measurement for the wide range of input Voltage and Current. This instrument displays Voltage, Current, Frequency, Active Power, Power Factorand Apparent Power simultaneously in a 7-Segment Display. The measurement is valid at all power factors and gives accurate results even in the presence of harmonics in the system.The Meter is provided with Hold facility.

OPTIONAL:  
                      The functionality of the meter is further enhanced by PC interfacing facility through USB Port. The accompanying software in capable of Data Logging and viewing the Meter Variables in real time on computer using the GUI provided. This Meter is provided with SD memory card facility to save up to 10000 test results with serial no. and data can be retrieve
later by inserting this card to PC or Laptop.

TECHNICAL SPECIFICATIONS:

    INPUT VOLTAGE    :    30-300 V AC (Other ranges available on request)

    INPUT CURRENT    :    10mA-2A / 50mA-5 A / 0.1-10 A (Other ranges available on request)

    MEASUREMENT      :    True RMS

    RESOLUTION           :    Floating Decimal Point

    ACCURACY              :    Class 0.2 and for P.F. + 0.005

    DISPLAY                  :     Four Rows 7 - segment Display

    AUX. SUPPLY          :    230V + 20%



SINGLE PHASE MULTIFUNCTION METER WITH AC SOURCE

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For further details or requirements, Email us or send Enquiry



        "CROWN" made SINGLE PHASE MULTIFUNCTION METER with AC Source with LED Display is developed to make the testing Simple, Faster, Accurate and Reliable with its high performing DSP based circuitry and user friendly operational features. It is useful for various
industries in Electrical Machines (like Transformers, Motors, Stabilizer), Power Electronics (like UPS, Inverter, rectifiers) and Lighting devices (CFL ,Ballast, LEDs).The high speed simultaneous sampling using 24-bit ADC ensures True RMS measurement for the wide range of input Voltage and Current. This instrument displays Voltage, Current, Frequency, Active Power, Power Facto rand Apparent Power simultaneously in a 7-Segment Display. The measurement is valid at all power factors and gives accurate results even in the presence of harmonics in the system.The Meter is provided with Hold facility. The functionality of the meter is further enhanced with PC

OPTIONAL : The functionality of the meter is further enhanced with PC interfacing facility through USB Port. The accompanying software in capable of Data Logging and viewing the Meter Variables in real time on computer using the GUI provided. This Meter is provided with SD memory card facility to save up to 10000 test results with serial no. and data can be retrieve
later by inserting this card to PC or Laptop.

TECHNICAL SPECIFICATIONS:

    INPUT VOLTAGE     :      20 - 500 V AC

    INPUT CURRENT     :      10mA-2A/50mA-20 A/0.1-80 A

    MEASUREMENT       :     True RMS

    RESOLUTION            :     Floating Decimal Point

    ACCURACY               :     Class 0.2 and for P.F. + 0.005

    DISPLAY                   :      Four Rows 7- segment Display

    AUX. SUPPLY           :      230V + 20%

DUAL OUTPUT DC REGULATED POWER SUPPLY

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For further details or requirements, Email us or send Enquiry



         "CROWN" made Dual Output DC Regulated Power Supply are constant Voltage & Current limit type supplies, have high regulation for Load & line Voltage variation. The supply can be use in independent & current tracking made. The supply are protected against short circuit & over load. The output current can be limited to any value from 0 to maximum.

Specification  :

                         OUTPUT VOLTAGE                                      CURRENT (MAX)
                                 0 - + 30V                                                          10A
                                 0 - + 30V                                                           5A
                                 0 - + 30V                                                           2A
                                 0 - + 30V                                                           1A