This circuit operates with an AM radio tuned to or near 900 kHz if there is a station at this location. The coil consists of 60 + 40 turns 28 on a ferrite rod.
The circuit of the figure serves the same purpose as the previous one (CB5057E), but has a...
This 80's General Electric circuit is guarded by the noise-guard for operating current. The...
The circuit is from an 80's publication, but the components are current, only special type diodes...