Tone Oscillator (CB22066E)

Found in old documentation, this oscillator with the LM380 produces an audio tone in a speaker. Frequency is set in VR1.

Temperature Compensated Crystal Oscillator (CB6144E)
This circuit was obtained from Linear Technology documentation from the 80's. Powered by 5 V it...
10 to 100 seconds time switch (CB20371E)
This circuit was obtained in a documentation from the 1970s. What it does is to delay trigger a...
Debouncer 555 (CB11564E)
In the figure we have an anti-ring or debouncer circuit with 555. The duration of the pulse is...