Transformer and LM317 Question

[indulis]

Like many 3 terminal regulators, there is a reference voltage between the output pin and the adjust pin. In the case of the LM317, it's 1.25V

 

[audioguru2]

Hi Indulis,
The heatsink tab is connected to the output terminal of an LM317. To avoid having output current in the wire connected to the voltage-setting resistor, my LM317 project uses the tab as the output terminal and the output pin for the voltage-setting resistor. Then the voltage regulation with changing load current is so good that I measure hardly any change in voltage at the output. ;D

 

[ELECTROMAGIX]

@audioguru

I not sure where is Sasi

I am back.... ha..ha ….