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Educational

Low Voltage Power Supply -ac/dc 10 Amp

Description :-
Designed for primary and junior secondary school use.
Input: 240V AC
Outputs: 6, 12, 24V DC/AC regulated at 3 Amp. with LED voltage indicator and automatic shutdown on circuit overload. Provided with illuminated ON/OFF switch and two 4 mm socket output terminals. Fitted with cooling fan.
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N-p-n Transistor Unit

Description :-
Mounted on transparent base, with 4mm color coded sockets, with circuit diagram printed for demonstration
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Oscilloscope

Description :-

  • Two Simultaneous Sampling Channels At 20 Ms/ S.
  • 2 Kilo Words Of Memory Storage/Channel .
  • Combination Of A True Dso And An Analog Oscilloscope One Touch Change Over.
  • Crt Readout And Cursors For Voltage Time And Frequency Measurement .
  • Direct Print Out Of Screen Display Using Hpgl Commands With Rs-232 Interface.
  • Ruggedised Environment Endurance.
  • 1mv/Div Sensitivity.
  • Two Input Channels, Algebraic Add And Subtract With Ch2 Invt.
  • A Sweep .
  • B Sweep ( Delayed Sweep ), Triggered.
  • X-Y Operation .
  • Read Out / Cursor .
  • Menu Selection ,Data Acquisition For Probe Factor, Smooth On/Off
  • Pre-Trigger Observation .
  • Single Sweep Operation ( Storage Band Width 5 Mhz ).
  • X2 To X10 Horizontal Expansion In Digital Mode .
  • Temporary Holding Wave Forms Displayed .
  • Storing And Recalling A Reference Memory .
  • Scale Illumination .
  • Continuous Variable Hold-Off .
  • Z- Axis Input .
  • Large Inch Crt With Internal Graticule .
  • Tv-V,Tv-H Triggering .
  • Calibrator Out Put For Probe Adjustment

Also Available :
10 Mhz Single Trace Oscilloscope.
25 Mhz Dual Trace Oscilloscope.
30 Mhz Dual Trace Oscilloscope.
60 Mhz Dual Trace Oscilloscope.
40 Mhz Dual Trace Triggered Oscilloscope.
60 Mhz Dual Trace Triggered Oscilloscope.
100 Mhz 2 Channel , 6 Trace Oscilloscope.
100 Mhz 4 Channel , 8 Trace Oscilloscope.
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P-n-p Transsistor Unit

Description :-
Mounted on transparent base, with 4mm color coded sockets, with circuit diagram printed for demonstration.
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Power Supply Digital

Objective :-
Features :
The DC Regulated Power Supply is an easy to use, low ripple high regulation precision instrument. Its unique feature is overload protection which makes it a safe power source for testing of electronic equipment. Both voltage and current are precisely regulated with low output ripple. The power supply can be operated in either constant voltage or constant current mode and is protected against overload or short circuit by means of automatic cross-over characteristics from C.V. to C.C. The output voltage and currents can be read on a meter. A switch is provided to select the LOW or HIGH” range of current. Maximum voltage is 30 volts.
Specification
Indication of:
1-50
3 1/2 digital panel meter voltage/ currentor analog panel meter
Accuracy of DPM:
1-100
0.5% + 1 digit
Accuracy of Analog Meter:
1-500
3% fsD
Line Regulation:
1-1000
0.05% plus 2 mv(for + 10% change in mains voltage)
Protection:
1-5000
Automatic cross-over type of output characteristic from C.V. to C.C.
Power Source:
1-10000
220 V AC + 10% / 50Hz.
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Power Supply E.h.t.

Objective :-
Features :
The unit provides a continuously varible E.H.T output from o to 5 kV d.c. with a low voltage output of 6.3 volt d.c. and is ideal for vacuum tubes etc. This unit uses a low voltage transistor inverter circuit and E.H.T. transformer. The high a.c. voltage is rectified and smoothened. A meter calibrated 0 t0 5 kV is connected to control the output voltage.

Output : E.H.T.-0 to 5 kV d.c., continuously variable. Terminal output voltage indicated by meter. Max short circuit current is safely at 3 mA. A heater supply 6.3 V a.c. at 4 A is fully isolated & insulated for 5 kV.

Protection : Mains 500 mA antisurge fuse, Output overload protected, E.H.T. max current limited to 3 mA
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Power Supply For Electromagnetic Kit

Description :-
For Westminster Electromagnetic Kit giving 1 V full wave rectified d.c. and 1 and 2 V.a.c. outputs at 8 A max. The circuit diagram is printed on the top panel which also carries mains switch,light indicator and output sockets for d.c. and a.c. With 1.5 metre mains detachable cable
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Power Supply H.t.

Description :-
Suitable for spectrum tubes, in case, with on/off and selector switch. Output 5 KV, 2-3 millamps. Operates on 220V A.C. 50Hz + 10%.
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Resistance In Series & Parallel Apparatus

Description :-
Objective : To verify properties of Resistances when connected in series & parallel.
Features : Instrument comprises of Two moving coil meters to measure voltage & current, Circuit diagram for series & parallel connections Printed & Resistances mounted on the front panel.
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Semiconductor Diode/pn Junction Diode Characterstics Apparatus With Regulated Power Supplies

Description :-
Objective : To study Forward & Reverse Characteristics of PN Junction Diode.

Features : Instrument comprises of two DC Regulated Power Supplies 0-3VDC/ 150mA & 0-30 VDC/150mA, two round meters for voltage & current measurement, PN Junction Diodes mounted behind the panel, connections of Supplies, Meters & Diodes brought out at 4 mm Sockets.
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Sine Or Square Oscillator 1hz-1mhz

Features :-
Sine/Square Oscillator 1 Hz – 1 MHz.Wave Shapes : Sine & Square wave outputs at 4 mm sockets.
Frequency Range : 1 Hz – 1 MHz setable using fine & coarse controls.
Accuracy : ± 5 % on all the ranges.
Amplitude for sine wave output : 30 V Peak to Peak.
Amplitude for square wave output : 15 V Peak to Peak.
Output Impedance for sine wave : App. 600 Ohms.
Output Impedance for square wave : App. 400 Ohms
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Transistor Characterstics Apparatus With Regulated Power Supply

Features :-
Transistor Characteristics Apparatus with Regulated Power Supply Objective : Input & Output Characteristics of Common Base PNP & NPN Transistors Input & Output Characteristics of Common Emitter PNP & NPN Transistor. Features : Instrument comprises of Two DC Regulated Power Supplies 0-10VDC/ 150mA & 0-1VDC/150mA, four round meters for voltage & current measurement, one PNP & one NPN Transistor mounted behind the panel, connections of Supplies & Transistors brought out at 4mm Sockets.
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