Crown Electronic Systems
Testing and Measuring Instruments

We manufacture a wide range of quality testing and measuring instruments. Used across various industries, these instruments provide accurate and precise measurement of data. Based on latest technology, all the instruments have in-built safety features to provide hassle free performance. The product range includes:


DC-20 MHZ Oscilloscopes
DC-20 MHZ Oscilloscopes
Large View

We offer DC- 20MHz oscilloscope. These are offered with the following features:

• 20 MHz/40 MHz
• High sensitivity 1 m V/div
• Expanded vertical sensitivity to 10 V - 20 V/div
• ALT triggering function
• Z-axis input, Chl output
• Encoder for sweep & vertical sensitivity switch
• 10 times sweep magnification
• TV synchronization, X-Y mode
• Triggering level lock function, automatic synchronize function
• Build- in 6 digit frequency counter (B F Model)
 
For technical specifications, click on the image.



5 MHZ X-Y Oscilloscopes

The oscilloscope is an electronic test equipment that allows the voltage signals to be accurately displayed.

 These are offered with the following technical specifications:

 VERTICAL CHANNEL

Sensitivity 10 mV P/P Division at 1 KHz
Frequency Response 10 Hz to 5 MHz (-3db)
Input Impedance 1M Ohm shunted by 40 pf (approx.)
Attenuator 10m V/Div. to 20VDiv. In 11 step 1,2,5 sequence, Accuracy 10%.
Maximum Input Voltage 400 V P/P

HORIZONTAL CHANNEL

Sensitivity 50mV P/P per Div. At 1 KHz.
Frequency Range 10 Hz to 1 MHz (-3db).
Input Impedance 1 M ohm shunted by 40 pf (approx.)
Attenuator 50mV/Div. to 20VDiv. in 9 step 1,2,5 sequence

X-Y OPERATION

Band Width 10 Hz To 1m Hz.
Deflection Factor 50 Mv/Div. To 20v/Div.

SWEEP FREQ. / TIME BASE

Frequency 10 Hz To 1m Hz.
Synchronisation 1. Internal, 2. External, 3. Line i.e. 50Hz
Frequency 10 Hz To 1m Hz
Sychronisation 1. Internal, 2. External, 3. Line i.e. 50Hz
Display 130 mm Diameter CRT. Display Area 8 * 10 Cm
Power Requirements 230V AC 10%

5 MHZ  X-Y Oscilloscopes


Sine Sqaure Oscillators
Sine Sqaure Oscillators

Sine square is audio oscillator that is used to produces different types of waveforms such as triangle, sine and square. These instruments are widely used for testing products having digital display such as most common HDTV displays including plasma, LCD, TFT, CRT, DLP, GLV and OLED. Available in variety of specifications, we offer Sine Square at the most reasonable price.

 These are offered with the following technical specifications:

Frequency Range 1 Hz to 1 MHz in 6 Decade Range
Dial Accuracy 3% of Range
Wave From Sine & Square Wave
Output Voltage Sine Wave 0-10 V in 3 Decade Step of 10 V, IV & 0.IV with Consciously Variable control
Square Wave 0-15 V P/P Continuously Variable
Sine Wave Distortion Less than 0.5% from 100 Hz to 100 KHz
Square Wave Rise Time Less than 100 nano seconds at maximum output
Square Wave Symmetry Duty Factor Variable From 0% To 80%
Output Impedance 600 Ohm 5%
Power 230 V AC 10%



Digital Micro OHM Meters

Our range of digital micro OHM meters is a compact and high reliability 31/2 digit instrument suitable for measurement of resistivity of copper wires from 7/0 SWG to 50 SWG, resistance of cables, windings, coils, heater elements and contact resistance of switches, relays, etc. Emphasis is provided to the designing of the instrument in order to ensure quick, stable and repeatable readings of resistance. The instrument uses 4-terminal measurement so that resistance of test leads and contacts is eliminated from test results. Actual value of resistor is directly displayed on seven segment 12.5 mm display.

The technical specifications are as follows: Range of Measurement:

1micro-ohm to 1999 ohm in seven range

Range (Ohms) Normal Test Current Accuracy
0 - 1999u 1.50 A 0.3% 2 Digits
0 - 19.99 m 0.75 A 0.2% 2 Digits
0 - 199.9 m 0.75 A 0.2% 2 Digits
0 - 1.999 75 mA 0.2% 2 Digits
0 - 19.99 7.5 mA 0.2% 2 Digits
0 - 199.9 ohm 0.75 mA 0.2% 2 Digits
0 - 1999 ohm 0.075 mA 0.2% 2 Digits

Digital Micro OHM Meters


Digital Panel Meters
Digital Panel Meters

These are offered with the following features & specifications:

Display 3 ½ Digit L.E.D. 12.5mm High
Resolution 1 in 1999 Count
Basic Accuracy ± 0.1 % ± 1 Digit
Operating Voltage 230V AC ± 10%
Optional 110V ± 10% AC/ 12V DC for DC Range
Panel Cut Out a)92mm (H) x 92mm (W)
b)46mm (H) x 92mm (W)
c)60mm (H) x 100mm (W)
d)92mm (H) x 144mm (W)
DC Voltage ± 199.9mV, ± 1.999mV, ± 19.99mV, 199.9mV ±1000V
AC Voltage 199.9mV, 1.999V, 19.99V, 199.9V & 750V
DC Current ± 199.9uA, ± 1.999mA, ± 19.99mA, ± 199.9mA, ±1.999A, ± 19.99A
AC Current 199.9uA, 1.999mA, ± 19.99mA, ± 199.9mA, 1.999A, 19.99A &199.9A



Digital Function Generators

We offer digital funtion generators. these are offered with the following features & specifications:

Salient Features:

• Excellent wave shape, signal linearity and wave from symmetry
• Wide frequency range from 0.01 Hz to 1 MHz
• Commendable frequency and amplitude stability
• Voltage controlled frequency sweeping facility
• Separate TTL / CMOS output and facility of DC offset

 Technical specifications:

Frequency Range 0.01 Hz to 1 Mhz in suitable steps
Function Sine, square, triangle, ramp, pulse, ttl/cmos, pulse output
Display Digital (4-digit 7 segment display)
Accuracy better than _ 1% 3 digit of F.S
Amplitude 30 V p - p into open circuit
Amplitude Control 0 to 60 db variable (2 x 20 db fine)
DC Offset Up to _ 15 v into open circuit, continuously
Output Impedance 250 Ohm & 600 Ohm _ 10% (switchable)
Power Required 230v _ 10% AC

Digital Function Generators


High Voltage Breakdown Testers
High Voltage Breakdown Testers

The range of high voltage breakdown testers manufactured by us offers excellent measurement of electrical transformer, cables & wires, insulation material & components, etc. These instruments offer great operational flexibility and provide hassle free services for years.

Specifications:

Output Volatge (AC) Test Current
0-5 KV
30 mA
0-5 KV 100 mA
0-10 KV 30 mA
0 - 10 KV 50 mA

Features:
  • Meter: Two digital meter to monitor voltage and leakage current
  • Accuracy: -1 % of reading
  • Indication:
    • HT: ON-Neon & Buzzer
    • HT: OFF-Neon
  • Power Requirement: 230 V AC



DC Regulated Power Supply

We offer dual output DC regulated power supply that are constant voltage, current limit type supplies. These have high regulation for load and line voltage variation. The supply can be used in independent and tracking mode. These supplies are protected against short circuit and overload. The output current can be limited to any value from 0 to maximum.

Output Voltage Current Maximum
0 TO 30 V 20 A.
0 TO 30 V 10 A.
0 TO 30 V 5 A.
0 T0 30 V 2 A.
0 TO 30 V 1A.

Specifications:
  • Input Voltage: 230 V ±10 % AC 50 H
  • Load Regulation: ± 0.05 % from no load to full load
  • Line Regulation: ± 0.01 % for ± 10 % variation in input voltage
  • Operating Mode: Independent and tracking mode
  • Ripple: Less than 1 mV
  • Meter: Four digital meter to monitor the output voltage and current of each supply
  • Protection: Against short circuits and overloads
  • Customized power supplies are available

DC Regulated Power Supply


Dual Output DC Regulated Power Supply
Dual Output DC Regulated Power Supply

Manufactured as per the international standards, the dual output DC regulated power supply are constant voltage current limit type supplies that have high regulation for load & line voltage variation. The system operates both independent and tracking mode operations. Available with safety features, these supplies are protected against short circuit, overload and polarity. The system also provides flexibility to offer current intensity from zero to maximum.

Output Voltage Current Maximum
0 - ± 30 V 5 A
0 - ± 30 V 2 A
0 - ± 30 V 2 A
0 - ± 30 V 500m A

Specifications:
  • Input Voltage: 230 V ±10 % AC 50 Hz
  • Load Regulation: ± 0.05 % from no load to full load
  • Line Regulation: ± 0.01 % for ± 10 % variation in input voltage
  • Operating Mode: Independent and tracking mode
  • Ripple: Less than 1 mV
  • Meter: Four digital meter to monitor the output voltage and current of each supply
  • Protection: Against short circuits and overloads
  • Customized power supplies are available



CRO Demonstrators

We offer CRO (Cathode Ray Oscilloscope) demonstrators as one of our products. Standard cathode ray tubes for oscilloscopes are poorly suited for demonstrations because important sections of the tubes are electrostatically and magnetically shielded, thus concealed from the view of the observer. Furthermore, these conventional cathode ray tubes require high accelerating voltages making them dangerous for an exposed setup. These are also offered as per our customers' requirements & specifications.

CRO Demonstrators


AM Radio Demonstrators
AM Radio Demonstrators

The "Crown AM Radio Receiver Demonstrator" is versatile super heterodyne Receiver design to under stand all the function of a single band transistor receiver. The trainer is made on single PCB (Size. 345 mm x 250 mm) and all components are mounted in side and circuit is made on Top. It has got an  "Crown AM Radio Receiver Demonstrator" is versatile super heterodyne Receiver design to under stand all the function of a single band transistor receiver. The trainer is made on single PCB (Size. 345 mm x 250 mm) and all components are mounted in side and circuit is made on Top. It has got an  --antenna coil, local oscillator, RF amplifier, IF amplifier, diode detector, audio amplifier, power amplifier with volume control & speaker. The trainer supplied with built in power supply. These are used to observe the characteristics i.e., sensitivity, selectivity, fidelity stability, noise figure and signal to noise ratio & hum measurement.



Logic Gates Circuit Trainers

Technical Specifications:


Input
230V AC ± 10%
DC Output
a) ±5V/500mA
b)0 - ±15V/500mA

These are offered with the followimg features:

Bread board having 1680 tie points is mounted on front panel
• 0 Logic Input with led Indicator using SPDT Switch
• 10 nos. logic output with led indicator
• 1Hz mono shot clock puls with pulser switch
• TTL clock pulser having output Frequency's of 10 Hz, 100 Hz, 1 KHz & 10 KHz selectable by switch
• Three segment display connected with sockets for each segments

The following experiment can be performed on this trainer:

• Study and verify truth tubes of logic gates
• Verification of Boolean identities & Demogran's theorems
• Study and verify truth table of digital adders and subtractors
• Study of flip-flop and verification of their truth tables
• Study of counters, shift registers and verification of their truth tables
• Study of encoders, decoders and verification of their truth tables
• Study of multiplexers, demultiplexers and verifications of their truth


Logic Gates Circuit Trainers



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