greatpanda5
- Feb 26, 2015
- 7
- Joined
- Feb 26, 2015
- Messages
- 7
We completed a circuit for an engineering capstone project. The temperature sensing ic is an LM355z. The circuit is supposed to output to a 9 volt buzzer once a certain threshold is crossed in temperature. The output chances the voltage with a change in temperatures. The voltage amount can be changed by the 3 potentiometers (1k, 10k, and 100k). We currently have the output going to a 3V LED. The idea is the led will turn on when a certain temperature is reached. Unfortunately, we don't know how to tune the circuit so that it operates at the wanted temperature range. Can anyone tell us how to approach this? We are thinking it could be with tuning the potentiometer or changing to LED. Thanks for the help!