PH meter (CB20731E)

This circuit was obtained in an old American documentation. The integrated circuit used is uncommon today. Modern equivalents can be searched.

| Clique na imagem para ampliar |

TQP92xx Power Amplifiers - Qorvo
TQP92xx series power amplifiers for frequencies in the typical range of 1,805 -2,200 MHz can be...
Tone control with the CA3140 (CB11980E)
This Baxandall tone control circuit is based on the JFET integrated circuit at the CA3140 input. The...
Crystal Calibrator (CB12492E)
This crystal oscillator circuit for equipment calibration, generates a 100 kHz signal from a 1 MHz...