Rocket Altimeter (CB25357E)

Today we have more compact solutions. This is from a Radio Electronics magazine from October 1990. It uses the technology of the time.

| Clique na imagem para ampliar |

400 mW amplifier (CB9056E)
Found in a 1970s documentation, this circuit has a flat response from 15 Hz to 130 kHz. Modern...
Basic Timer 555 (CB13891E)
In the figure we have the basic configuration of a timer with the 555, according to Radio Shack's...
Electronic compass (CB25163E)
This circuit is from an article in the December 1988 issue of Radio Electronics magazine that...