The difference between this circuit and the previous one is that it uses PNP transistors. The circuit is from Radio Electronics magazine from July 1968. The frequency depends on R1 and C1.
In the figure we show a monostable that uses two of the four ports available on 4001. The duration of...
August 2017 - The new IXYS solid state relay CPC2907B from IXYS is currently in stock at Mouser...
This circuit was found in a 1990 Electronics World magazine. The circuit can be mounted today by...