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How to connect a bistable valve?
Hello!
Repairing a faucet on a sink with electronic control.
I replaced the control unit with my own, assembled on ARDUINO. The whole circuit and valve work on 5V.
Faced a problem. The valve that cuts off the water supply turned out to be BISTABLE.
Those. we supply + and - it opens and remains open even after the voltage is removed, we change the polarity to - and + closes and remains closed if the power is removed.
We need a scheme for implementing a change in polarity. Google didn't turn up anything specific.
The valve itself is not big, 6V DC, 1.5 mA.
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On a pair of relays, you can, or one for two channels, like this:
You can make an H-bridge on four transistors. Upper transistors are p-type, lower ones are n-type.
As an example:
Look for topics on reversing DPT, there just these options will fit.
ZDR!
What about HG7881 ?
With this, can the valve be controlled?
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