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  1. T

    Speed controller for valves

    Don't they make valves that work off of low voltage DC? I think that would be a lot safer! Electricity and water don't mix well. If you insist on using 120 volts, a triac might be an easier and better solution than a relay. A flip flop sound like it would work for your circuit. A flip flop has...
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    hall effect sensors

    Ok, what does FFS mean? Inquiring minds want to know.
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    hall effect sensors

    I won't need a capacitor discharge system. With just the MOSFET I can get 5000 volts spark, which is plenty. That's what my old Toyota has and it runs great. I know I could get a lot more than that, but I like the KISS method. Keep It Simple Stupid. ha. I also have a couple other projects that...
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    hall effect sensors

    Ha, ha, thanks a lot! These old eyes couldn't see the pin out. :D I think I can figure out the rest from here. Thanks a Lot.
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    hall effect sensors

    I wish I could post a schematic, but I don't have a printer that is working. It is a very simple circuit. Just a automobile coil with a cap. in parallel and a MOSFET to ground, that will be controled by the sensor and amplifier. You can look at the second link I posted to see the sensors and...
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    hall effect sensors

    Well, I've been searching for two or three hours and I found some circuits for a SS41, which look very similar,, but no pinouts. I think they are sensitive to incorrect voltage hookups. I also think that stupid Jameco sold me some outdated sensors at a high price...
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    hall effect sensors

    I have a couple of hall effect sensors from Jameco electronics, that I want to experiment with.Jameco has very little info. on them. They are RS41 by Honeywell but I can't find any examples of circuits or pin outs for them. If anyone knows the pinout or a circuit I could sure use the help. I...
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    voltage standard

    Ha, ha, now I don't feel so bad!:D
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    What is the output voltage in this circuit?

    It would be a sine wave of 1 volt peak to peak imposed on a DC voltage. Your circuit doesn't show how much the DC voltage is. Usually the DC voltage is applied to the top of the resistor thru another resistor and the resistor is grounded. like a DC bias voltage to turn on a transistor. Say the...
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    voltage standard

    For my cheap harbor freight multimeters, it would be overkill. ha I don't know why I didn't think of it before, but when Resqueline mentioned those voltage standards, I thought a regulator IC would be close enough. So I found a 6 volt regulator in my junkbox and hooked it up and set all my...
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    voltage standard

    Thank you for that info.
  12. T

    voltage standard

    I would like to find a way to accurately set my voltmeters, especially on DC. I have several and they are all different. :)
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