Using the 4001 integrated circuit, this latching relay can employ any general-purpose transistor. The power supply is according to the relay with voltage up to 12 V.
Wired to the output of any amplifier this circuit makes an incandescent lamp flash according the...
The block shown in the figure, although it is known to many readers, is not always in everyone's memory...
This old amplifying stage was found in radios and small amplifiers of the time. The circuit is...