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A device or circuit that generates an AC signal at a certain frequency.

1 vote
5 answers
267 views

Control resistances with voltage

Let's say I have an audio oscillator, which a resistor varies the tone. I have 5 different voltage sources, each representing a tone. …
skyler's user avatar
  • 10.3k
8 votes
2 answers
12k views

What is the highest frequency possible to be generated with electronic circuits

First, its sound oscillators for low-frequency audio waves. Then Radio wave oscillators varying from low frequency AM to high frequency Cell-phones. Then microwave oscillators in the giga hertz. What …
skyler's user avatar
  • 10.3k
2 votes
3 answers
4k views

Transistor alternating between multiple LEDs

I know how to alternate between 2 LEDs using the simple 2 transistor, 2 capacitor and 2 resistor circuit here. My question, is if you add another transistor, capacitor and resistor, c …
skyler's user avatar
  • 10.3k
6 votes
5 answers
2k views

Vacuum tube LED flasher

I am wondering if I can make a vacuum tube oscillator for a LED flasher. The problem is I only have 4 vacuum tubes: 14GT8, 12AU6 and 2 12BA6 tubes. … I just want a LED flasher/oscillator  circuit that needs the tube(s) to function for fun. Is this possible? …
skyler's user avatar
  • 10.3k
4 votes
3 answers
5k views

Low voltage oscillator for joule thief

I have no data on the transformer, but I am wondering if it is possible (and if so what is the schematic or instructions on how to do it) to put a low voltage oscillator before the transformer. …
skyler's user avatar
  • 10.3k