Please see the attached circuit. Could someone please help me?
For a solar thermal project, I would like to build this circuit. (That requires only a soldering torch and the will to follow a recipe.) As a power source, I'd like to use an AC-to-DC wall adaptor transformer with output of 12V and 830 mA. The pump will be 12V, 600 mA.
Several people have suggested adjustments to the circuit. The 1M ohm resistor, connected around pin 3 to pin 1 of the LM393, to control hysteresis, should be 10M ohm. There should also be a 1N4001 connected 'backward' around the pump, to protect the circuit from surge when the pump is stopping. The STP60NE06 is obsolete, but a preferred replacement HUF75337P3 is available; its datasheet says this mosfet is good up to 15A and 55V.
So, the difficult question. Does my AC-to-DC transformer have enough amperage, with 830 mA, to run the circuit as well as the pump?
Thanks very much.
For a solar thermal project, I would like to build this circuit. (That requires only a soldering torch and the will to follow a recipe.) As a power source, I'd like to use an AC-to-DC wall adaptor transformer with output of 12V and 830 mA. The pump will be 12V, 600 mA.
Several people have suggested adjustments to the circuit. The 1M ohm resistor, connected around pin 3 to pin 1 of the LM393, to control hysteresis, should be 10M ohm. There should also be a 1N4001 connected 'backward' around the pump, to protect the circuit from surge when the pump is stopping. The STP60NE06 is obsolete, but a preferred replacement HUF75337P3 is available; its datasheet says this mosfet is good up to 15A and 55V.
So, the difficult question. Does my AC-to-DC transformer have enough amperage, with 830 mA, to run the circuit as well as the pump?
Thanks very much.