This circuit found in a 1964 US publication reverses the signal level by providing 9 to 0 V outputs from 0 to 9 V signals. Transistors may be equivalent.
This 1995 circuit uses an audio amplifier that is no longer common today. However, other...
High Current Through Hole Inductors for Vishay's 5A Series IHXL-2000VZ-5A Series Power Supply are...
Light falling on the transistor changes both the mark and the space of the generated signal thanks to the...