Similar to other circuits found in this section, this circuit is from a 1996 Electronics World; FET is general-purpose and the output circuit must be resonant at 100 kHz.
Here we have an interesting circuit found in a 1981 publication that causes two LEDs to flash...
This circuit can flash for up to 30 months using alkaline batteries as shown in the table next to the...
This circuit, from a 2006 documentation, automatically controls the activation of a water pump, and...