Found in a 90s Popular Electronics, this circuit makes use of power MOSFETs. Equivalent MOSFETs can be used. The circuit acts as a shield.
This circuit was obtained from an English magazine from 1976. The circuit operates two LEDs and...
Found in a publication from the 60's, this power supply has no regulation, but only current...
This circuit can use the LM148 and its more modern equivalents, generating a sinusoidal signal whose...