This circuit was found in a 1971s English magazine. We can still assemble it using BC548 transistor. The other components are common. The supply voltage of 6 or 12 V depends only on the relay.
This common 555 circuit was found in documentation from the 90s. The circuit uses two 555s and the...
This type of circuit, found in American documentation from the 1980s, triggers producing output...
This circuit is nothing more than a voltage quadruplicator that can generate close to 1 000 V from...