I found tis circuit in na old documentation from 1958. The circuit uses germanium transistor availble that time and hard to obtain today. The circuit is indicated for phono applications using variable reluctance transducer.
This circuit is from a PE Hobbyst Handbook from 1991. The integrated circuit is a common 555 and...
July 2017 - The new TLP240 and TLP241A optical couplers with MOSFET output, manufactured by...
This flasher circuit was found in Radio Electronics from the 90s. The circuit must be powered by a...