Found in an EEE from 1970, this circuit supplies a voltage of 12 V DC x 10 mA current from the power grid. The NOR or NAND port used is TTL.
This circuit was obtained from a Popular Electronics of the 90's. Any power MOSFET can be used as...
This alarm circuit with sensors in series was found in the Electronics Now magazine of June 1994....
This Radio Electronics circuit, in an 80's edition, decodes the 67 kHz signal used at the time to...