In analog hardware synthesizers, an electric pulse is sent by an oscillator to a sound-emitting device for it to create sound at the desired frequency.

  • What device generates this pulse?
  • What is the standard schematic symbol for this electronic component?
  • \$\begingroup\$ Any digital output can be either high or low. And switch between them, making a "pulse". \$\endgroup\$
    – Eugene Sh.
    Jun 24, 2021 at 13:50
  • \$\begingroup\$ oscillators produce AC signal from DC source so i am not sure if this question makes any sense \$\endgroup\$
    – Miss Mulan
    Jun 24, 2021 at 13:51
  • 3
    \$\begingroup\$ There is no single component that generates pulses; there are numerous ways of doing so. \$\endgroup\$
    – Hearth
    Jun 24, 2021 at 13:54
  • \$\begingroup\$ Maybe this question makes more sense if we interpret "electric pulse" to mean some arbitrary AC signal and oscillator to be some waveform generator. A switch would do. \$\endgroup\$
    – nabulator
    Jun 24, 2021 at 13:54
  • 1
    \$\begingroup\$ @SolomonSlow A Digital Sampling Synthesizer is a digital to analog component commonly used to generate waveform, a music synth is something entirely different. I'm not sure which we are talking about so I rolled the edit back. \$\endgroup\$
    – Voltage Spike
    Jun 24, 2021 at 22:17

1 Answer 1


These circuits can vary and there is no specific single component , electrically, that can be pointed to as the "output", it is usually a circuit, which might be integrated into an IC or other device.

Quoting from another answer of mine on an unrelated question https://electronics.stackexchange.com/a/550721/1729

It is important to understand, ahead of time, what your work product is trying to communicate, an electrical design consists of many different documents and deliverables. A schematic as a design asset needs to be specific as possible. It is simultaneously defining the implementation and serves as a documentation for other designers. In extreme cases some professional shops go as far as define a symbol for every part number. A simplified schematic has a different use case (publication in academic paper) than a production worthy schematic.

If you are making certain types of system diagrams it is ok to use generic symbols for various elements. With the knowledge that they convey incomplete information.

For example a pulse source can be pulse square wave inside a circle. Generally a symbol inside a circle is indicating to a reader that there is more complexity inside the device.

  • \$\begingroup\$ This answers my question. You need a whole circuit rather than an electronic component. Thank you so much for your precision on that. \$\endgroup\$
    – GPWR
    Jun 24, 2021 at 23:39
  • \$\begingroup\$ Oh, just found something... How about a crystal oscillator? Seems to be globally recognised as a single component. Is it possible that such a device be used as an oscillation generator for music synthesisers? en.wikipedia.org/wiki/Crystal_oscillator \$\endgroup\$
    – GPWR
    Jun 25, 2021 at 13:46
  • \$\begingroup\$ Naked XO's are almost never seen providing unprotected output, it still needs a circuit, e.g. an amplifier or a buffer to use as a synth worthy output. \$\endgroup\$
    – crasic
    Jun 25, 2021 at 15:41
  • \$\begingroup\$ I see. Very interesting. Thank you! \$\endgroup\$
    – GPWR
    Jun 28, 2021 at 12:57

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