SCR Triggering Circuit
Product Code : JA-PET-1424
The SCR triggering circuit trainer shows how the TCA-785 signal conditioner and pulse generator IC fires an SCR with controlled gate pulses. Students change the reference voltage and follow the change in firing angle, working with an opto-coupler, a 100 V/1 A SCR and a BC-107 transistor on the panel (SKU JA-PET-1424).
Specifications
The TCA-785 board carries these parts and ratings:
| Product | SCR Triggering Circuit |
| SKU | JA-PET-1424 |
| Pulse generator IC | TCA-785 signal conditioner and pulse generator |
| Regulated supplies | +15 V and +10 V DC at 50 mA, internally connected; +5 V DC at 50 mA, isolated |
| Synchronising signal | 24 V AC at 300 mA |
| Opto-coupler | Fitted |
| SCR | 100 V / 1 A |
| Transistor | BC-107 |
| Mains | 230 V ±10%, 50 Hz AC; ON/OFF switch, fuse and jewel light |
| Patch cords | 4 mm stackable spring-loaded plugs, 0.5 m |
| Weight | 4 kg approx. |
| Dimensions | W 412 x H 150 x D 310 mm |
| Other apparatus required | Dual trace CRO 20 MHz (unearthed); 24 V/7 W bulb |
Experiments with the TCA-785 SCR triggering board
The listed experiments are:
- SCR triggering with controlled gate pulses
- Change of firing angle in response to a change in reference voltage
- Functioning of the TCA-785 signal conditioner and pulse generator IC
Scope of supply and ordering
The listing covers the TCA-785 SCR triggering board with patch cords and operating instructions, supplied by JaincoLab; the oscilloscope and the 24 V/7 W bulb are listed as other apparatus required. Quantities, packing and lead time are confirmed on the quotation.
Frequently asked questions
Which IC generates the gate pulses?
The TCA-785 signal conditioner and pulse generator IC. The board also carries an opto-coupler and a BC-107 transistor.
How is the firing angle changed?
By changing the reference voltage; the firing angle moves in response, which is one of the listed experiments.
What else is needed to run the experiments?
A dual trace 20 MHz oscilloscope (unearthed) and a 24 V/7 W bulb are listed as other apparatus required.
Related products
The power electronics trainers range lists further items of this kind.
Request a quote
Ask for the price of the SCR Triggering Circuit by quoting SKU JA-PET-1424 on the JaincoLab contact page. For tender or project supply, see our tenders page.
