IF amplifier with the S041P (CB21890E)

Found in the 1976 Siemens transistors manual, this circuit works with AM or FM IF signals. In the diagram information is given for the coils.

| Clique na imagem para ampliar |

Voice operated transmitter (CB20412E)
This transmitter kicks in when the microphone picks up sound. This sound then modulates the signal...
Varicap Variable Frequency Oscillator (CB13088E)
The great advantage of the circuit shown in the figure is the fact that its frequency is...
Twilight switch (CB24176E)
This circuit for incandescent lamps was found in the February 1972 Radio Electronics magazine. The triac is...