# Tag Info

### Simple square wave frequency multiplier/divider

Given that the multiplier is not necessarily an integer, it sounds like a tiny MCU would be the best solution. Its simple program would measure the period of the incoming signal and synthesize a new ...
• 176k

### Band pass filter with LED

What is the problem? I see quite a few (NOTE: some of them do not relate to your actual frequency-lighting stuff but the overall circuit design). C7 does nothing other than load the signal generator....
• 37.2k

### What is the correct formula for the 3 dB frequency of an RC or LC Circuit?

Facts: There are $2\pi$ radians in one complete revolution of a circle. It's the circumference of a circle with radius 1. If that circle revolves at 1 turn per second (equivalent to a frequency of ...
• 465k

### What is the correct formula for the 3 dB frequency of an RC or LC Circuit?

Angular frequency Omega is 2pi*f so the formulas are correct.
• 161k

### Simple square wave frequency multiplier/divider

It would be possible to do this with a CMOS PLL such as 4046 and a divider plus a programmable divider. For example, suppose you lock onto 256 times the input frequency (8 bit divider) so you have 7....
• 410k

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