Thyristor Time Delay Relay
Product Code : JA-PET-1421
The thyristor time delay relay trainer is a power electronics board for studying timed switching with a UJT timer, SCRs and a TRIAC. Students set the delay with a ramp potentiometer and a choice of three capacitors, then observe delayed turn-on and automatic turn-off of a DC load, and of a TRIAC AC line switch driving a 15 W lamp (SKU JA-PET-1421).
Specifications
Built-in parts and ratings listed:
| Product | Thyristor Time Delay Relay |
| SKU | JA-PET-1421 |
| DC supply | 12 V DC at 2 A, internally connected |
| Timer | UJT 2N2646 |
| Delay adjustment | Ramp control potentiometer; set of 3 capacitors |
| SCRs | Two, in parallel coupled mode, with commutation capacitor |
| Start | Push button switch |
| AC switch | TRIAC line switch; lamp holder with 15 W, 230 V lamp |
| Mains | 230 V ±10%, 50 Hz AC |
| 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; digital stop clock |
Experiments on the time delay trainer
The listed experiments are:
- Delayed turn-on of a DC load
- Automatic turn-off of a DC load
- Delayed turn-on of a TRIAC line switch
- Automatic turn-off of a TRIAC line switch
Scope of supply and ordering
The listing covers the time delay relay trainer with lamp, patch cords and operating instructions, supplied by JaincoLab; the stop clock and multimeter are separate. Pack quantities, packing method and lead time are fixed on the quotation.
Frequently asked questions
How is the time delay adjusted?
With the ramp control potentiometer and by choosing one of three capacitors.
What AC load does the trainer switch?
A 15 W, 230 V lamp switched by the TRIAC.
What is needed to time the delay?
A digital stop clock, with a 3 3/4 digit multimeter for measurements.
Related products
See the power electronics trainers range for other items in this family.
Request a quote
Enquiries for the Thyristor Time Delay Relay can be sent with the quantity needed through our contact page. Tender and project enquiries can be sent through the tenders page.
