This circuit of dozens of watts uses germanium transistors and the critical components are transformers. The circuit is from the 1960 Mullard transistor application manual.
This circuit uses a common digital clock to activate a relay at a programmed time. The circuit takes...
This circuit can flash for up to 30 months using alkaline batteries as shown in the table next to the...
This transmitter has excellent range when using an external antenna (respecting legal...