Digital Oil Pressure Gauge (CB25336E)

This circuit was found in the July 1990 Radio Electronics magazine. It is based on the 3-digit indicator ICs CA3161 and CA3162.

| Clique na imagem para ampliar |

Gate Dipper (CB13563E)
This is a MOSFET version of a grid dip meter for frequencies between 1.8 MHz and 150 MHz,...
Fiber optic receiver (CB9737E)
This circuit has a sensitivity of 2uW. We found it in documentation from the 1980s. The integrated...
Optical Pyrometer LM10 (CB14318E)
The sensors in this circuit are photodiodes with filters. The circuit is suggested by the National...