This circuit multiplies the frequency of a signal by 100. The circuit was found in the October 1994 issue of Electronics Now magazine. The PLL does not operate above approximately a dozen megahertz.
The scratch is the noise of scratching or scrape that occurs when scratched vinyl records are...
The purpose of this circuit is to eliminate RF picked up by a turntable. The circuit is from a...
The circuit shown uses an operational transconductance amplifier such as the LM3900. Transistors...