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  1. Alec_t

    Muff Pedal Distortion Repair

    If the LED is intended simply to confirm the pedal is active, then to conserve battery power you could connect between the power rails a high-efficiency LED in series with, say, a 2.2k resistor. That would give a LED current of about 3mA.
  2. Alec_t

    Need a little inspiration

    A big fat resistor is about as simple a discharge load as it gets, providing you already have an auto-shututoff on the battery. The load WILL get hot, whatever you use!
  3. Alec_t

    Can Anybody Identify This Manufacturer Logo?

    A bit like one of the Plessey logos ?
  4. Alec_t

    How to monitor an actuator's feedback line from a microcontroller?

    How about This assumes pins 7-10 are not connected to any other supply.
  5. Alec_t

    Electronic Development

    Most 3-axis accelerometer modules (MEMs) can sense Earth's gravity resolved along the axes, hence can sense tilt.
  6. Alec_t

    How do I amplify a low Amp signal (12 v, 100 mA) to 12 v 3.0 Amps?

    As Chemelec mentioned, magnet inductance will be an issue. Annoyingly the datasheet gives no info about the magnet inductance. For a 9lb 33W magnet I would expect the inductance to be quite significant. If we take it to be, say, 1H then the magnet reactance at 10Hz would be ~ 60Ω. You would need...
  7. Alec_t

    Stuck detecting 'engine running' from alternator 'W' signal

    No, I didn't build the circuit. Glad you have it working with a few tweaks.
  8. Alec_t

    Stuck detecting 'engine running' from alternator 'W' signal

    Would something like this meet your needs? It will accept alternator voltages from around 3V rms to at least 50V rms and will have little effect on the tacho drive signal. I don't understand what your clamping arrangement is.
  9. Alec_t

    Where is the oscillator?

    Yes. They drive pins 2 and 4 of the transformer and their bases are in turn driven by feedback from the winding with pins 1 and 5.
  10. Alec_t

    Looking for some assistance with a 555 one shot controller?

    What effect does changing the jumper positions of S1 and/or S2 have?
  11. Alec_t

    Missing remote and motor controller

    Both. Teensy-weensy micro-mechanical gyro inside a chip.
  12. Alec_t

    555 flasher isnt flashing

    Yes, providing battery negative is actually connected to your circuit correctly.
  13. Alec_t

    Mobile linear amplifier

    An infra-red camera could reveal any hot spots (though with 760W going somewhere, a wet finger could do that :) ).
  14. Alec_t

    555 flasher isnt flashing

    Pin 1should be 0V and pins 4 and 8 should be 9V (assuming you are using a 9V supply).
  15. Alec_t

    Please excuse total noob query regards seeking storm bad signal effect on sat TV

    In that case, couldn't you just photoshop some static images (screenshots) and display the results in sequence?
  16. Alec_t

    Mobile linear amplifier

    Welcome to EP! Which cap where? The pics are unclear. Can you post sharp, well-lit close-up pics, as well as make and model details?
  17. Alec_t

    Please excuse total noob query regards seeking storm bad signal effect on sat TV

    If the attenuator is a shunt to ground, rather than being in series with the DC, it would allow DC to pass.
  18. Alec_t

    Please excuse total noob query regards seeking storm bad signal effect on sat TV

    Perhaps couple the attenuator via a capacitor?
  19. Alec_t

    Drone propellor not spinning. motor fine. no voltage

    The spec according to a different ad for that drone says the airframe is waterproof. Who knows about the rest of it?
  20. Alec_t

    Drone propellor not spinning. motor fine. no voltage

    Sounds like that transistor is dead, then.
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