Study of Triac and A.C.Phase Control Manufacturer,Supplier and Exporter in India
Product Code : SCL-EELE-12882
Indian Lab Suppliers supplies the Study of Triac and A.C.Phase Control (Product ID: 12882) as part of its electronics engineering lab equipment range. It is a training board for TRIAC characteristics and AC power control by phase control, with a built-in 40 W lamp load.
Quick Answer
Students trace the TRIAC characteristic in all four triggering modes (I+, I−, III+ and III−), then drive the gate from an NPN and from a PNP transistor. A DIAC pulse generator provides phase-controlled triggering, and a lamp-dimmer circuit shows the hysteresis (snap-on) effect and how gate slaving reduces it. An RF choke and capacitor form a filter for studying the radio-frequency interference produced by phase control and its suppression. Two potentiometers set bias and firing angle, and the board runs from 230 V ±10%, 50 Hz mains.
Key Specifications
| Parameter | Detail |
|---|---|
| Experiments | TRIAC in 4 modes; NPN and PNP gate control; DIAC phase control; dimmer hysteresis and gate slaving; RFI and its filter |
| Devices | TRIAC, DIAC |
| Controls | 2 potentiometers for bias and phase control |
| RFI filter | RF choke and capacitor |
| Load | Lamp holder with 40 W lamp |
| Mains | 230 V ±10%, 50 Hz; ON/OFF switch, fuse and indicator lamp |
| Connections | 4 mm stackable patch cords, 0.5 m |
Where This Is Used
Used in AC power-control practicals together with the Triac A.C. Line Switching with Power Supply (Product ID: 12885) and the Lamp Dimmer Using Diac and Triac with Power Supply (Product ID: 12912). The lamp load is at mains voltage: switch off before changing connections. Browse the full Electronics Engineering Lab Equipment range or related Electronics Lab Equipment products.
Frequently Asked Questions
What are the four TRIAC modes?
I+, I−, III+ and III−, set by the polarities of MT2 and the gate.
Why does a lamp dimmer show hysteresis?
The timing capacitor charge changes after the first firing, so the lamp turns off at a different setting from where it turned on.
Is a load included?
Yes, a lamp holder with a 40 W lamp.
Related Categories
Electronics Engineering Lab Equipment · Electronics Lab Equipment · Engineering Lab Equipment
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