relay drive

Hi everyone, when i power up the circuits even i don't trigger the relays, they are overheating. When i try to trigger them sometimes they are not closing if they closed once i can't open them without power off the circuit. What can be the problem ?

I have a mechanical system I'm building and I want to use snap switches to control the order of operations. The order will be something like this. 1. Run 1 revolution of the electric motor, then stop motor. 2. Activate solenoid. 3. Activate second electric motor for 1 revolution. 4. Begin...

Hello, I have a custom esp32-based PCB that controls 2 power relays that drive a 32A load. Until recently the board worked fine and didnt have a problem driving the relays. But today one of the boards stoped working, due to one of the pins that controls the relays. Upon closer inspection the...

Hello I need to develop a 100ms delay circuit to energize / de energize the relay. Could any one help me. Relay coil voltage 12V. And relay coil state is controlled by comparator having 0 to 15 level transition.