martin_t
Newbie level 6

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Hi all.
I have a question. I have to switch a contactor/relay. It has to remain open for fifty secs every two minutes or so.
The coil resistance is 58 ohm and it takes 0.50 amps aprox (36Vdc) , and is connected to ground.
Some people suggested using relays, but I wanted to do it all solid state.
The signal comes from a flip-flop (15Vdc) and goes into the N-Mosfet (actually it's an IRF830).
Should the zener be 36V?
This is what I came up with. Any suggestion is welcome.

Thanks very much in advance.
Martin
I have a question. I have to switch a contactor/relay. It has to remain open for fifty secs every two minutes or so.
The coil resistance is 58 ohm and it takes 0.50 amps aprox (36Vdc) , and is connected to ground.
Some people suggested using relays, but I wanted to do it all solid state.
The signal comes from a flip-flop (15Vdc) and goes into the N-Mosfet (actually it's an IRF830).
Should the zener be 36V?
This is what I came up with. Any suggestion is welcome.

Thanks very much in advance.
Martin