nº970

 

Minimalist mains supplied led sequencer. Synchronization is achieved by using neon lamp. Only low voltage transistors are used.

nº969

 

Simple led ring oscillator, supply 230Vac/50Hz

nº968

 

Experimental VHF super-regenerative receiver compatible with airband. Two transistors. Super-regenerative detector based on 2SC2786. Earphones cable performs also as VHF antenna. Supply 3xR03.