Zero Voltage Switching with Power Supply Manufacturer,Supplier and Exporter in India
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Product Code : SCL-EELE-12920
Indian Lab Suppliers supplies the Zero Voltage Switching with Power Supply (Product ID: 12920) as part of its electronics engineering lab equipment range. It demonstrates zero-voltage switching, in which a thyristor is allowed to turn on only near the zero crossings of the AC supply.
Quick Answer
A transformer supplies a low AC voltage to the thyristor circuit and, through a two-diode full-wave rectifier, a DC supply for an NPN transistor; a third diode keeps negative voltage off the transistor collector. The transistor diverts the gate drive while the supply voltage is appreciable, so the thyristor can fire only as the voltage passes through zero. Switching at zero voltage avoids sudden current steps, which reduces radio-frequency interference and stress on the load. The board runs from 230 V ±10%, 50 Hz mains.
Key Specifications
| Parameter | Detail |
|---|---|
| Experiment | Zero-voltage switching of a thyristor |
| Devices | Thyristor; NPN transistor |
| Rectifier | 2 diodes, full wave; 1 collector-protection diode |
| Supply | Transformer for low AC (thyristor) and DC (transistor) voltages |
| Mains | 230 V ±10%, 50 Hz; ON/OFF switch, fuse and indicator lamp |
Where This Is Used
Used with the Triac A.C. Line Switching with Power Supply (Product ID: 12885) and the Study of Triac and A.C.Phase Control (Product ID: 12882) to contrast zero-voltage switching with phase control. Browse the full Electronics Engineering Lab Equipment range or related Electronics Lab Equipment products.
Frequently Asked Questions
Why switch at zero voltage?
It avoids sudden current steps, reducing interference and inrush stress.
What does the transistor do?
It blocks gate drive except near the zero crossings.
Is the thyristor supply at mains voltage?
No, a transformer gives it a low AC voltage.
Related Categories
Electronics Engineering Lab Equipment · Electronics Lab Equipment · Engineering Lab Equipment
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