The optical clue become from four Led.
R1=1K2 R6=10K D2-3-4-5=LED
R2-3-4=680R R7-8-9-10=1K IC1=LM324
R5=15K D1=5V6 /0.5W Zener RV1=10K trimmer
The circuit, is a comparator, can measure with step of 1Volt, the voltage of battery of car. The clue of voltage become after comparison of voltage of battery, that is applied in the inverting inputs of amplifiers, with voltages of [...]
circuit Auto Charger battery 12V (with PCB)
PCB Auto Charger battery 12V (with PCB)
This circuit Auto Charger battery 12V will quickly and easily charge most any lead acid battery. When the battery is fully charged, the circuit Relay switches off and lights a LED.
Read more : Auto Charger battery 12V with PCB by IC 741
Mod a 9V rechargeable battery to give you +3.6V, Ground and -3.6V. You will appreciate this idea if you ever had to clobber together a bunch of AAs or AAAs to get a project working. This instructable was meant to be part of a larger project, but I decided to submit this part alone to [...]
Obsession Theme by Lorelei. Coded by Cheap web hosting and Hostmonster.
Featuring Liza Kliko's artwork in the header.
