This flasher for incandescent lamps was found in Radio Electronics magazine from July 1968. The frequency and duration of the pulses are adjusted in R1 and R3 depending also on C1.
The current of this charger is determined by Rs. The circuit is from the 1982 SGS linear...
This circuit is used to connect an additional capacitor to a tuned circuit of a VFO. The circuit...
This alarm does not interrupt its operation when the power is cut. A battery is kept at a constant...