This analog volt-ammeter was found in an Electronics World of 1968. It makes use of a 0-1 mA analog milliammeter. Accuracy depends on the components.
This low frequency circuit was found in documentation from the 1980s. The values of R and C...
The 4528 is a dual-retriggerable monostable that needs only the timing network formed by R and C...
This ttransistor test was found in a 1987 documentation. It is a simple oscillator that allows to...