Low Battery Disconnect Switch Circuit

Here is the circuit of battery voltage disconnect switch with 10-14V voltage range. The battery disconnect switch uses the versatile 555 timer IC can be found in many electronic circuits. Basically, the circuit aims to prevent damage to the battery due to over-discharge. Schematically illustrated on the monitor battery voltage and disconnect the battery from the circuit when it falls below a preset value.

The battery disconnect switch circuit uses two
Battery Disconnect Switch

Computer Temperature Monitor

Computer Temperature Monitor Circuit
Excess heat too much can cause damage to the electronics. Similarly, on a computer or laptop, so monitor the temperature of CPU and other computer components are very important. Computer temperature monitor can help you keep the equipment running in good condition.

In order for a laptop computer temperature monitoring program to function for most of this type, then you need to activate the ACPI BIOS motherboard. This program serves as a controller of the
Computer Temperature Monitor

Digital ESR Meter Schematic

Detecting defective electrolytic capacitors when they are still in the circuit is a difficult and complicated job. The use of an ESR meter to it will allow the technicians to identify the damage is easily and quickly. This device is very important to measure the characteristics of electrolytic capacitors in the form of equivalent series resistance (ESR).

If you want to have an ESR meter can be through purchase in the form of a kit or DIY or buy a device ready to use it online like at Amazon. If you want a simple one, you can make it follow the instructions of the device schematic from tech info on the internet.

ESR Meter