This circuit is from a Radio Electronics from February 1959. The circuit has a speaker output and good sensitivity. Power is supplied from a 9 V battery.
This circuit is from a specialized documentation in 1992 FETs. The L1 coil has 0.07 uH with...
We find this circuit in a documentation for engineers from 1971. The circuit generates rectangular and...
This is the simplest setting for lighting an LED. The circuit is from old English documentation that got...