This 1 to 40 MHz amplifier is from a 1969 Motorola documentation. The components are of the time but admit modern equivalents.
This circuit activates a relay when the conducting bars (probes) are held by a person. The circuit is...
This circuit in the National Semiconductor Fast IC Power Transistor manual uses a special power...
This wireless intercom has a range of about 300 meters using an integrated circuit that is not...