HI All,
Im designing a test system for a control panel used in wind turbines, i need an LED to light from an LM324n once the voltage received from the output of a relay switch is is above the deseired 21v. no problem, nice and easy. now the problem.
I have only one power supply. that power supply feeds the power and GND to both the LM324n and the Relay switch.
In order for the relay switch to latch and drive power to the LM324n it needs 24v and 0v., but what seems to be happening is the switching rail on the relay switch is shorting (for a tiny amount of time), which in turn causes my LM to fry. without using a circuit breaker (which would render my sense circuit usless) and without using a second power supply how do i solve this very annoying issue?
N.B sorry about shoddy diagram.
Im designing a test system for a control panel used in wind turbines, i need an LED to light from an LM324n once the voltage received from the output of a relay switch is is above the deseired 21v. no problem, nice and easy. now the problem.
I have only one power supply. that power supply feeds the power and GND to both the LM324n and the Relay switch.
In order for the relay switch to latch and drive power to the LM324n it needs 24v and 0v., but what seems to be happening is the switching rail on the relay switch is shorting (for a tiny amount of time), which in turn causes my LM to fry. without using a circuit breaker (which would render my sense circuit usless) and without using a second power supply how do i solve this very annoying issue?
N.B sorry about shoddy diagram.
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