Every car owner in the end is faced with problems associated with the battery. Battery power not enough to start carbut you don’t want to buy a new one? We will help you to independently make a charger for a car battery.
For this we need:
- transformer;
- Voltage regulator;
- soldering iron;
- diode bridge;
- thyristor;
- ammeter;
- shunt;
- clamps
The stabilizer can be removed from the old TV. We will use it to make the case for the charger.
Let's start with the scheme of the future charger. According to this scheme, you need to make a printed circuit board. How can make circuit board, you can learn from past materials published on our website.
After successfully etching the circuit board of the charger, the required holes must be drilled.
Now you can pick up a soldering iron, with which we will collect the board. Let's start with the diode bridge. It can be purchased at a store or market. The only thing to consider is that the bridge is designed for a minimum of 10 amperes of current. The author of the idea, for example, uses a diode D242. The diode bridge must be soldered to a piece of PCB.
Since the radiator will be very hot during the operation of the charger, you need to install a thyristor on it.
The ammeter requires special attention. According to the author, he purchased it in a store. After that, he finalized the circuit by adding a switch to it. It will allow you to measure the voltage on the battery. This will require a shunt. Pay attention to the shunt connection. It needs to be connected in series.
Let's get down to the hull. To begin with, we disassemble the stabilizer and take out its filling.
We make a mark on the front wall and drill a hole along the diameter of the variable resistor. Do not forget about the switch. After that, we take a drill of small diameter, with which we drill a hole for the ammeter. After drilling, we process the edges of the holes so that they are not too sharp.
You can see the most convenient location for a transformer, a radiator with a thyristor in the photo below.
In the end, it remains to purchase clamps, which are known among motorists as crocodiles.
According to the author, the presented charger circuit allows him to work exclusively under load. Therefore, to charge the car battery, you need to connect a light bulb to the terminals. You can use a car.