This car battery monitor was featured in the January 1988 issue of Radio Electronics magazine. The circuit uses common transistors and has 3 levels of indication made with common LEDs.
The circuit in figure 12 is ideal for interfaces for microcomputers or digital circuits subject to...
This car battery monitor was featured in the January 1988 issue of Radio Electronics magazine. The circuit...
This 3 + 3 V symmetrical source circuit uses an old operational amplifier. The circuit is from an...