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  1. Bluejets replied to the thread How to control the field current of an alternator by using PWM?.

    B terminal is the main battery connection. What type of alternator do you have. Most these days have an internal regulator. If an older...

    Mar 24, 2017 at 11:38 AM
  2. (*steve*) replied to the thread Vacuum in a Can.

    The problem with vacuum in a can is that all I've ever been able to get is the diluted vacuum. I want a concentrated vacuum so that...

    Mar 24, 2017 at 11:37 AM
  3. Technician Tonny replied to the thread Dynamic mic amp as clap switch.

    Ohk let me search for aflip flop circuit, Thanks.... And am using an electric mic, i made a mistake in my post

    Mar 24, 2017 at 10:30 AM
  4. Technician Tonny liked Audioguru's post in the thread Dynamic mic amp as clap switch.

    During the clap sound, the relay will flip and the sound that is still occurring plus its echo will cause the relay to flop back to the...

    Mar 24, 2017 at 10:11 AM
  5. (*steve*) replied to the thread How to control the field current of an alternator by using PWM?.

    Well, rather than supplying DC, you supply a PWM signal. Obviously you will need to monitor the current if the absolute value is...

    Mar 24, 2017 at 9:03 AM
  6. duke37 replied to the thread Transmitter circuit operation explanation.

    C5 is part of the oscillator tank circuit, it will have voltage across it. This is used as an input to drive T2 gate. T2 is a source...

    Mar 24, 2017 at 8:44 AM
  7. scanfbla liked 73's de Edd's post in the thread Help needed to identify these components.

    Estimating as a 26V transzorb . . . . Then there are the two copper wire airwound RFI inductors And the1 of 2 sintered bronze bearings...

    Mar 24, 2017 at 8:14 AM
  8. scanfbla liked davenn's post in the thread Help needed to identify these components.

    first image, the4 yellow thing is a 1uF non polarised monolithic capacitor second image is a diode, type unknown ... tell us ALL the...

    Mar 24, 2017 at 8:14 AM
  9. Xavier Pacheco replied to the thread How to control the field current of an alternator by using PWM?.

    So, do I just need to build a normal PWM and supply it with the "B" Terminal (Output voltage) of the Alternator?

    Mar 24, 2017 at 7:07 AM
  10. (*steve*) replied to the thread How to control the field current of an alternator by using PWM?.

    You vary the pulse width (or more strictly the mark/space ratio) to vary the average current.

    Mar 24, 2017 at 7:01 AM
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