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Unread 15-01-2003, 20:53
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Quote:
Originally posted by Adam Shapiro
a diode converts AC current to DC current.
You are right, but that is sort of a side-effect of diodes. Diodes are semiconductor devices that pass current in one direction only. For example, if you have a 5V battery, current will only pass when you place the more positive terminal to the anode of the diode. Also, current will not pass until the voltage reaches a certain level known as the voltage threshold. The reason that AC is converted to DC is that the lower (negative) voltages won't pass through the diode, effectively cutting them off. This is the basis for tuning circuits.

The diode that SuperDave was refering to was probably the one used for the double solenoid. That diode blocks current in the circuit that FIRST gave to use one relay for both solenoid valves. I'll try to find where it is in the manual for you. (edited: apparently it's on page 11...thanks rob )
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