Archive for category: Battery and Charger Diagram

Automatic Battery Charger Circuit Schematic Diagram

Battery and Charger Diagram | By: Diagram mania

This circuit is used to fill up the accumulator. When the accumulator is already depleted, the current flows through D3 is low, therefore make the T1 off. IC1 output will be low, therefore T2 and T3 basis current will be determined only by P1 position. If the accumulator voltage is between 10 and 14 volts, […]

Automatic Battery Backup Circuit Schematic

Battery and Charger Diagram | By: Diagram mania

To connect a main supply with a load and backup battery, the simplest link is to use the diode-OR connection. However, it will not work when the battery voltage is greater than main supply voltage. The circuit below is used to overcome that problem. Automatic Battery Backup Schematic Wiring Diagram Component list : 9V Battery […]

Wireless phone backup battery circuit Diagram

Battery and Charger Diagram | By: Diagram mania

This circuit can be used as the backup power supply on the wireless telephone. The battery type used is the Ni-Cd SANYO CLT-420 and the like. The principle of this circuit is, when the 220V AC power supply connected to the battery, it will recharge automatically. When the AC supply is unplugged, the battery will […]

Rechargeable Battery Reconditioner Circuit : Ni-Cad Battery Zapper

Battery and Charger Diagram | By: Diagram mania

Nickel Cadmium battery sometimes cannot be recharged and gives no power. If this kind of problem occured, it have to be reconditioned. We can do this by using a zapper circuit. This schematic restore the Ni-Cad battery from shorting by forcing a high current flow to burn the internal dirt. A 120 ohm 10W resistor […]

Battery Level Indicator Circuit Schematic Diagram

Battery and Charger Diagram | By: Diagram mania

The following circuit diagram is from the National Semiconductor Application Notes. It is a battery level indicator and designed for 9V battery operation. This circuit will start dimming below 7V and completely turned off at 6V. If you want the LED indicator not to dimming but just turns off everytime it reaches below 6V, just […]

12V Ni-Cad Battery Charger Circuit Diagram with Auto-Off

Battery and Charger Diagram | By: Diagram mania

In terms of high current output with low internal resistance and low cost, Nickel-Cadmium battery charger circuit is still needed. On the market, there are still many applications ask for this type of battery. The following circuit charges 12V NiCad battery at around 74 mA until the battery is fully charged. Depends on the battery […]

Battery Backup Regulator with LT1020 Circuit Diagram

Battery and Charger Diagram | By: Diagram mania

This circuit diagram is taken from the Linear Technology application notes. A low-loss way to carry out a”glitch-free” battery backup for a memory or similar circuit is shown on the following schematic diagram. To make LT1020 does not conduct under line-powered conditions, we have to arrange the feedback string. The line LT1020 begins to go […]

How to build Nicad Battery Charger

Battery and Charger Diagram | By: Diagram mania

Circuit diagram Notes: This simple charger uses a single transistor as a constant current source. The voltage across the pair of 1N4148 diodes biases the base of the BD140 medium power transistor. The base – emitter voltage of the transistor and the forward voltage drop across the diodes are relatively stable. The charging current is […]

How to build Simple but reliable car battery tester

Battery and Charger Diagram | By: Diagram mania

Circuit diagram This circuit uses the popular and easy to find LM3914 IC. This IC is very simple to drive, needs no voltage regulators (it has a built in voltage regulator) and can be powered from almost every source. This circuit is very easy to explain: When the test button is pressed, the Car battery […]

How to build Car Battery Charger

Battery and Charger Diagram | By: Diagram mania

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. At this time, a lower voltage is applied to finish off and keep from over charging. When the battery is fully charged, the circuit switches off and […]