UJT Relaxation Oscillator Manufacturer,Supplier and Exporter in India
Product Code : JA-PET-1414
The UJT relaxation oscillator trainer is a power electronics board for studying the uni-junction transistor (UJT 2N2646) and its use as a trigger circuit for SCRs. It includes an isolation transformer, a regulated 20 V DC supply, a zener regulator, a 1:1:1 pulse transformer and switched resistance and capacitance values, so students can vary the oscillator and watch the trigger pulses on an oscilloscope. It runs on 230 V AC mains (SKU JA-PET-1414).
Specifications
Built-in parts and ratings listed:
| Product | UJT Relaxation Oscillator |
| SKU | JA-PET-1414 |
| Device under test | UJT 2N2646 |
| Isolation transformer | 230 V AC at 100 mA |
| DC supply | 20 V DC at 100 mA, IC regulated, internally connected |
| Regulation | Bridge rectifier and zener regulator |
| Controls | Frequency potentiometer; two band switches for resistance and capacitance values |
| Pulse transformer | 1:1:1 |
| Mains | 230 V ±10%, 50 Hz AC; ON/OFF switch, fuse and jewel light |
| Patch cords | 4 mm stackable, 0.5 m |
| Weight | 3 kg approx. |
| Dimensions | W 340 x H 110 x D 210 mm |
| Also required | 3 3/4 digit multimeter; 0-30 V, 1 A regulated supply; 20 MHz dual trace CRO (unearthed); 0-230 V, 2 A variac |
Experiments on the UJT trainer
The listed experiments are:
- Zener diode as a voltage regulator
- Static emitter characteristics of the UJT on an oscilloscope
- Effect of supply voltage on peak point voltage, valley point voltage and valley current
- UJT relaxation oscillator as an SCR trigger circuit
- Control of trigger pulses with a shunt transistor
- Effect of resistance and capacitance values on the trigger pulses
- Type 1, 2 and 3 oscillator configurations (low, moderate and high output impedance)
Scope of supply and ordering
The listing covers the trainer with its built-in parts, patch cords and operating instructions, supplied by JaincoLab; the multimeter, external supply, oscilloscope and variac are separate items.
Frequently asked questions
Which UJT is used on the trainer?
A 2N2646 uni-junction transistor.
Why does the trainer have an isolation transformer?
It protects external instruments from damage if they are not isolated.
What instruments are needed with it?
A 3 3/4 digit multimeter, a 0-30 V 1 A regulated supply, a 20 MHz dual trace oscilloscope and a 0-230 V, 2 A variac.
Related products
- Three Phase Half Controlled Thyristorized Bridge Converter
- SCR And AC Phase Control
- DV and DT Limitation Of SCRS
- Triac and AC Phase Control
Other products in this group are in the power electronics trainers range.
Request a quote
For a price on the UJT Relaxation Oscillator, share the quantity and destination via the contact page or email [email protected]. Buying under a laboratory tender? Use our tenders page.
