AC regulator works on the principle of converting fixed AC voltage to a variable AC voltage operating at the same frequency. This principle is used in speed control of AC drives, pumps, illumination control, temperature control of ovens etc. The devices used for such a control are TRIACS, DIACS and THYRISTORS.

This trainer is intended to provide facility to change the phase angle ? of TRIAC GATE with reference to power line frequency. As a result of this the ON / OFF state of TRIAC is varied, thereby varying RMS value is changed. In this trainer it is possible to measure the phase difference between the input and the output signal. This trainer contains a TRIAC, DIAC necessary firing circuit, and power supply. Load circuit waveforms can be observed through the test points provided. You can connect the load like fan, lamp, pumps, etc. not exceeding max 1A at the load terminal. An isolated 12 AC reference supply is available, for comparing the phase difference at various points on the circuit board, using an external dual beam oscilloscope. In order to connect external loads like fan, lamp, pumps, etc, a separate power socket is available as part of TRIAC circuit. Using this AC loads upto 1 A can be connected. It is very important to note that, HIGH VOLTAGES EXIST on the circuit board, so sufficient and enough care must be taken while measuring the circuit under study.

The entire instrument is housed in an elegant FRP cabinet.

Specifications:

• Power : 230 V AC @ 50Hz
  
• TRIAC Load : AC load not exceeding 1 A.
  
• DIAC : 1 No.

An external dual beam oscilloscope is required for measuring and observing the waveforms.
NOTE: Enough care must be taken for isolating AC signals. Qualified staff must be present while conducting this experiment.