Inverter for LDS from a broken laptop
In this article I will talk about how you can just make an inverter for LDS. I needed it to check the backlight of the lamp matrices of laptops. In such matrices, a regular gas discharge lamp of very small diameter is installed as a backlight. And like any other kind of lamp, it starts only if a large potential is applied to the filament. The laptop is responsible for this inverter.But, unfortunately, it’s not always possible to run it away from a laptop, and besides, it’s not always possible to find a worker . I propose to make a decent alternative to this device. And so all we need is a computer power supply of any power and a transformer from an inverter or similar self-made. First of all, take the power supply and drain all the extra wires except the green one and connect it network (220 V)The green wire can be immediately soldered to the minus (where there were black wires) this wire is responsible for starting the power supply when it is closed on the case, the same thing happens when pressing power button on the system unit. Now you need to solder to the low-voltage windings of the main (largest) transformer. Without exception, any power supply unit produces voltages of +3.3 (orange wires) +5 (red wires) +12 (yellow wires) Accordingly, each terminal has its own output and one earth (black wire) Approximate diagram of the output block of any BP element designation approximate data taken and may not match.
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