This circuit was found in a 90s Electronics Now. The maximum current is 1.5 A, given by the regulators. Regulators must be provided with heat sinks.
This 1967 Philips circuit recognizes a light signal (visible or infrared) modulated by tone. The...
This circuit turns on an old cassette recorder when the telephone rings, thus enabling the...
This is the receiver for the previous circuit transmitter. Similarly, no information about the...