This 4.5 MHz amplifier is suitable for analog TV applications. We found it in a 1967 Philips documentation.
The idea of this automation can be extended to other applications that involve the control of...
What differentiates this circuit from the previous one (CB15613E) is the non-need to use a...
Found in Elektor Electronics from the 90s, this circuit produces the tone of 1 750 Hz for calling VHF...