Straffan
New Member
Hi All
Attached is a simple thermostat circuit I found which would suit my need perfectly except that when the temperature reaches the pre-set level (set by trimpot R4) the LED lights as expected but the output pin on IC1B (LM324 op amp) goes low instead of high. How can I reverse this so that the LED lights when the output goes high intead of low ?
Thanks in advance for any help
Attached is a simple thermostat circuit I found which would suit my need perfectly except that when the temperature reaches the pre-set level (set by trimpot R4) the LED lights as expected but the output pin on IC1B (LM324 op amp) goes low instead of high. How can I reverse this so that the LED lights when the output goes high intead of low ?
Thanks in advance for any help