This logic tester circuit was published in the November 1980 issue of Radio Electronics magazine. The circuit works with both TTL and CMOS logic and has several selectable functions.
The transistors T1 and T2 of this circuit can be the BC558. T3 can be a BD135 and T4 a TIP42. The...
In the figure we show a means of changing the output voltage of a fixed regulator, such as 7805 or...
We got this circuit in a publication of 1987. This is an audio limiter, a circuit that cuts peaks...