This circuit was found in a 1967 RCA manual. The transistors are of the time. The adjustment is made to read 7.15 V on the charged battery and the charging current is 3.2 A.
We found this conventional version of a single-transistor oscillator in the January 1996 issue of...
This low-pass filter with 741 op and symmetrical source was found in the August 1993 issue of...
This simple CMOS touch switch was obtained in a 1987 publication. All components are common and the...