chrisdot
Newbie level 2
Hi, I face current limiting problem in 723 based power supply (3-30V, 0-2A). I got this:
device and try to replace R5 (normaly 0.15Ohm, 5W) with standard 1k potentiometer. Unfortunatelly my pot is burning - I counted that it should be about 30W - I got 0.25W...
If I place my potentiometer between 723's 2 pin and TR2's Emiter pin it does not work.
Is there any possibility to successfully limit current in this device having 0.25W potentiometer?
Regards
device and try to replace R5 (normaly 0.15Ohm, 5W) with standard 1k potentiometer. Unfortunatelly my pot is burning - I counted that it should be about 30W - I got 0.25W...
If I place my potentiometer between 723's 2 pin and TR2's Emiter pin it does not work.
Is there any possibility to successfully limit current in this device having 0.25W potentiometer?
Regards