UV Sensor with UVTRON Tube (CB25942E)

The UVTRON tube is an ultraviolet radiation sensor. In this circuit from Radio Electronics from April 1990 we have a flame detector.

| Clique na imagem para ampliar |

RS232 temperature interface (CB21278E)
Found in an Electronic Design from the 90's, this circuit uses common components. The circuit is...
Locked Light Relay (CB3868E)
When the sensor receives light, the relay closes its contacts and remains so even after the light...
90V Pulser (CB8838E)
This circuit produces pulses of 90 V at intervals that can reach 5 minutes. The circuit is from a...