This circuit for controlling high power LEDs (up to 2A) is from a General Electric documentation from 1970. The circuit serves to modulate a transmitter in PWM. The circuit serves as a shield.
This circuit was found in Popular Electronics. Its purpose is to warn the visually impaired when a glass...
This indicator for audio signals uses only 3 components. LEDs are common and the audio signal with...
We found this circuit in an American 80's documentation. The circuit can be adapted to function as a...