Double limit detector (CB9589E)

Found in ancient American documentation, this circuit uses some components from the time, such as comparators.

| Clique na imagem para ampliar |

Acid Rain Monitor (CB25037E)
Written in an article in Radio Electronics magazine in April 1987, this circuit triggers an alarm...
IR Remote Control Receiver (CB25785E)
This is the receiver circuit for the previous transmitter. The circuit has a programming key to...
Temperature Sensor TMP390 (CB20399E)
This is an example of a temperature sensor shield using the Texas Instruments TMP390 obtained from...