Hi-End low pulsating AC-DC power supply, principal circuit

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Published: 08 March 2016
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fig1To start working with any electronic device you need a power supply. For our vacuum tube project we need DC output for 250-300V; our electrical grid is 220V AC 50 Hz (European standard). A lineal laboratory supply is an expensive device. It might be uncomfortable to invest about 1500$ at the beginning of your hobby project.

Let’s describe some basics principles and difficulties you may have with AC/DC supply.