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 presented is from the National Semiconductor's Linear Applications Handbook of 1994. We...
This signal injector is of great use in the troubleshooting of radio receivers and amplifiers. What we...
In the figure we have an interesting configuration in which we took advantage of the very high...