5V switch (CB8705E)

Found in a 90s EDN, this circuit makes use of period components. The maximum current depends on the MOSFET.

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12 V to 110 or 220 V Inverter (CB17056E)
Depending on the transformer used, the power of this inverter can reach 300 W. This is a critical...
Emergency Light (CB13151E)
This circuit from an old American publication uses a 12 V transformer and an incandescent lamp in an...
Super regenerative detector (CB24292E)
This circuit with an unusual configuration was found in the January 1974 issue of Radio...