Search results

  1. H

    Timer circuit

    I made a solar pool heater, but want to regulate the outlet flow. If it just flows unregulated, the water does not get warm enough.It needs more time in the sun before going into the pool. I want to install a sprinkler valve controlled by a timer circuit that will open at 3, 4 or 5 minute...
  2. H

    Reducing battery charger output

    Good afternoon. I have a standard car battery charger, which when set on the lowest setting outputs 12Volts and 2amps, which is great for slow charging larger car batteries. However, I also have a much smaller motorcycle battery which will literally get warm or hot if charged with 2 amps or...
  3. H

    Oscillator simple circuit as dummy supply

    Some of my previous posts described a problem with my older Cadillac. There is a permanent magnetic two-wire sensor buried deep in the transmission. I generates an AC signal, and I think, a sine wave. Minimum required output spec's to the cars computer (ECM) are 5.5 VAC and 540 Hz, when...
  4. H

    Op Amp with a/c output

    A few weeks ago you guys helped my understand op amp circuits, to help me with a car sensor. A new question and one I should have asked before: can anyone give me a simple circuit design or schematic that shows how to take 12 VDC from the car wiring and convert it (maybe through an op amp or...
  5. H

    OP-amp help

    I am new to this forum and really need some guidance. I am fairly good with electrical, but some electronics stump me. My problem is that I need to install a small op-amp into my car, '95 Cadillac Seville. The transmission has an "Input speed sensor" that sends an AC voltage signal to the PCM...
Top