| During the past year the author has built a standalone solar panel system, which included the construction of the panels themselves. Such a...
| During the past year the author has built a standalone solar panel system, which included the construction of the panels themselves. Such a...
| This voltage monitor circuit is based on an Elektor design with a 555 timer IC in the book 302 Circuits, which uses two LEDs (red and green)...
| A circuit for monitoring supply voltages of ±5 V and ±12 V is readily constructed as shown in the diagram. It is appreciably simpler than...
| Digital voltmeters are popular tools for anyone wishing to measure electrical voltages. The circuit described here is, we feel, unique bec...
| Excessive noise is bad for your health and bad for your surroundings. It cannot be said too often: too many young people go prematurely...
| When combining water and electricity it is essential that the current flow be a.c., else electrolysis will eat one elecriode away. This...
| The charge-discharge-idle (C-D-D monitor described here is suitable for all vehicles with a 12-V or 24-V battery of which the negative t...