Automatic Charger with CD4541
The circuit is capable of supplying either a trickle (50 mA) or high-current (1-A) charge. You can select either charging method or an automatic mode that will ...
Ni-Cd Battery Automatic Charger
The circuit presented in the above schematic has been designed to charge automatically two series 350mAh "AAA" size batteries. Set the 20KOhms multiturn potenti...
Solar Charge Controller
The design goals of this circuit were efficiency, simplicity, reliability and the use of field replaceable parts. A medium power solar system can be built with ...
Fast Battery Tester
Tests 1.5 to 15 Volt cells. This circuit runs a fast battery test without the need of power supply or expensive moving-coil voltmeters. It features two ranges: ...
12v 10 LED battery monitor
this circuit uses the LM3914 and should be powered by its own battery, otherwise you might get an innacurate reading. hook the to-be-monitored battery to pin 5 ...
12v high/low battery monitor
R1 controls the trip-point of the circuit. adjust it accordingly. to reverse the logic (have the led light up when the battery has at least X amount of power,) ...
RC Charger
Charge current: I=0,45V/R2
Power-dissipation by R2: (0,45 * 0,45 / R2) !
Please adjust 13,8V by R5 without connected battery....
Car Battery Charger
This charger will quickly and easily charge most any lead acid battery. The charger delivers full current until the current drawn by the battery falls to 150 mA...
Car-Battery charger for Nokia 8210
It`s just a simple power supply with a 7805 regulator, the chip must be mounted on a large metal radiator, because the current requested by the regulator is nea...
R/C Thermal Peak Detection NiCd Charger
The charger described in this article can charge packs of 4 to 7 cells with capacities ranging from 600mAh to 2Ah. The charger automatically begins charging whe...
R/C Thermal Peak Detection NiCd Charger
The charger described in this article can charge packs of 4 to 7 cells with capacities ranging from 600mAh to 2Ah. The charger automatically begins charging whe...
High Speed NiCd Charger for R/C
It can safely charge a 7-cell RC2000 pack in about 14 minutes, and an RC2400 or CP2400SCR pack in about 17 minutes. As a NiCd cell is being charged, two things ...
High Speed NiCd Charger for R/C
It can safely charge a 7-cell RC2000 pack in about 14 minutes, and an RC2400 or CP2400SCR pack in about 17 minutes. As a NiCd cell is being charged, two things ...
Solar charger for lead-acid batteries
This circuit is intended for charging lead-acid batteries with a solar panel. The customary diode that prevents the battery from discharging through the solar p...
Solar charger for lead-acid batteries
This circuit is intended for charging lead-acid batteries with a solar panel. The customary diode that prevents the battery from discharging through the solar p...
12 Volt 20 Amp Solar Charge Controller
A 12 Volt solar power system can provide power to a wide variety of devices. Some examples include: lighting systems, cellular phones, CB and Ham radios, car st...
12 Volt 20 Amp Solar Charge Controller
A 12 Volt solar power system can provide power to a wide variety of devices. Some examples include: lighting systems, cellular phones, CB and Ham radios, car st...
12 Volt 20 Amp Solar Charge Controller
The SCC3 is a solar charge controller, it`s function is to regulate the power flowing from a photovoltaic panel into a rechargeable battery. It features easy se...
12 Volt 20 Amp Solar Charge Controller
The SCC3 is a solar charge controller, it`s function is to regulate the power flowing from a photovoltaic panel into a rechargeable battery. It features easy se...
NiCads charger
The driver circuit (see the complete schematic) has 4 main sections:
* the voltage definition,
* the integrator,
* the current booster, and
...