The integrated circuit used in this amplifier is not very common today. This amplifier was found in the 1977 National Semiconductor Audio Handbook. The power source must be at least 500 mA.
This SCR relaxation oscillator was found in an 80's Electronic Design. It flashes a small...
The coils for this transmitter, found in a 2002 documentation, have the following characteristics: L1 - 4...
This dimmer configuration is quite old, as it was found in a 1967 publication. The triac can be of...