Temperature to Frequency Converter LM35 or LM34 (CB25447E)

We found this circuit in the March 1992 Radio Electronics magazine. The circuit provides 100 Hz for each degree Celsius or Fahrenheit.

| Clique na imagem para ampliar |

Automatic Polarity Switching Voltmeter (CB14856E)
This circuit automatically inverts the test leads connection according to the polarity of the...
Volume Control (CB19186E)
This circuit was found in a publication from the 90s. The circuit can be assembled with modern...
Word Filter (CB13612E)
This filter, from an audio publication from 1977, passes the frequency range corresponding to the...