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# Single Phase Full Converter with R and RL

## Aim

To obtain DC voltage from AC input using Single phase Full Wave Converter with R load and RL load and also with freewheeling diode and without freewheeling diode.

☞Patch cards

☞Power card

☞CRO

## CRO Settings

Time (X) Axis : 5ms/div

Voltage (Y) Axis: 20V/div

Probe :1:10 CRO Probe is suitable one.

## Initial Settings

☞Ensure the 230V Power Supply is in proper with Tester.

☞Ensure the CRO is working properly with probe checking and proper ground line axis.

## Experiment Steps

☞The connections are made as per the circuit diagram given above.

☞The R Load must be 60W bulb or 200ohm/2A Rheostat. The Load is 120mH/2A.

☞When the load is R heostat, then it must be in maximum position.

☞Turn on the SW2 and observe the waveform across between G1&K1, G2&K2, G3&K3, and G4&K4. And ensure it is like triggering pulse given in model graph.

☞Turn ON SW1 and observe the waveform across the R load and RL Load.

☞Measure the X-axis time interval of ON time of Load Voltage and OFF Time of Load Voltage.

☞Adjust the value of Firing angle and note down the load voltage and current.

☞Repeat the step 6.

☞Repeat the experiment for different values of α and note down Vo.

Note: *If the connections are wrong the kit will get damage. *The load must be R and RL. Do not connect L Load alone.

## Model Graph

Figure: Output Load Voltage and Current

## Observation

 S.NO OFF Time(ms) ON Time(ms) Alpha(α in Degree) Vo(Volts) 1 4 6 72 64 2 3 4 5

## Observation

 S.NO Alpha(α in Degree) Beta(b in Degree) Measured Voltage (Volts) Calculate Voltage (Volts) 1 72 36 2 3 4 5

## Model Calculation

The Average Output Voltage

## Result

Thus the above experiment for Single Phase Full Converter is done and the result was verified with R and RL Load.