UJT Relaxation Oscillator

Product Code: JL--1414

UJT Relaxation Oscillator 


Study of zener diode as voltage regulator

Study of static emitter characteristics of UJT- uni-junction transistor on oscilloscope

Study of effect of V on peak point and valley point voltage and valley point current

Operation of UJT relaxation oscillator and its use as SCR trigger circuit

Control of UJT trigger pulses with shunt transistor

Study of variations in gate resistance & capacitance, resistance of source & drain and their effect on trigger pulse characteristics of UJT relaxation oscillator

Various configurations of UJT relaxation oscillator type 1(low output impedance), type 2 (moderate output impedance) and type 3 (high output impedance)

In built parts:

An isolation transformer 230 V A.C. At 100 mA. This protects external instruments from damage if they are not isolated

20V D.C. at 100mA, IC regulated power supply internally connected

Bridge rectifier and zener regulator

Potentiometer for frequency control

Two band switches for selecting different value of resistance and capacitance

Pulse transformer 1:1:1

UJT 2N 2646 under experiment

Adequate no. of other electronic components

Mains ON/OFF switch, fuse and jewel light


The unit is operative on 230 V ±10% at 50 Hz A.C. mains

Adequate no. of patch cords stackable 4 mm spring loaded plug length ½ meter

Good quality, reliable terminal/sockets are provided at appropriate places on panel for connections/observation of waveforms

Strongly supported by detailed operating instructions, giving details of object theory, design procedures, report suggestions and book references

Weight: 3 kg. (approx.)

Dimension: W 340 x H 110 x D 210

Other apparatus required:

Digital multimeter 3¾ digit - order code 16901

0-30 V, 1 amp IC regulated power supply

Dual trace cathode ray oscilloscope 20 MHz (unearthed)

Variac, 0-230 V A.C. @ 2 amp

Other Information

Pay Mode Terms: T/T (Bank Transfer)

Port of Dispatch: India

Delivery Time: 4 weeks

Packaging Details: Corrugated Box

Related Products