Frequency Synthesizer 4046 (CB25257E)

We found this CMOS circuit based on the PLL4046 in the December 1989 issue of Radio Electronics magazine. The circuit is powered by a 9 V voltage.

| Clique na imagem para ampliar |

10 to 84 MHz Colpitts oscillator (CB4052E)
This Colpitts crystal oscillator was found in an American publication for amateurs in the 1980s....
Sensor Darlington Touch (MSB060)
Two transistors connected in direct engagement, so that the first emitter is connected to the base of...
Negative Voltage Generator (CB25844E)
This very low power circuit is based on the ICL7860. We found it in an Electronics Now from April...