Mobile power supply A portable charger that integrates power supply and charging functions. The benefits it brings are also very high. For example, when you go out, you can charge the mobile phone without plugging in, and you can charge many electronic products in time. For example, mobile phones, PDAs, digital cameras, etc. So how do you make a mobile power supply yourself? This article has a detailed illustration tutorial.
Modern society has entered the mobile era, and various handheld devices, such as mobile phones, tablets, and notebooks, have entered thousands of households and are closely integrated with our lives. The handheld device is light and easy to carry. The only bad thing is that the power-off time is too short. It is better to make a mobile power supply and replenish the power anytime and anywhere!
materials needed:Transistor npn and L7805CV Zener, capacitor 50v10u and 50v4.7u, ceramic capacitor 104pf, wire, hot melt adhesive, diodes 4004 and 4148, battery case, usb female, advertising card (housing), switch.
Production steps:
The USB is attached to the case.
positive.
Voltage regulator board. The output is 5v.
This is a circuit diagram.
One inductor.
Two diodes.
One of the triodes.
One capacitor.
Made a Joule thief.
It is best to do this.
have a test.
Connect the voltage regulator, how to see the circuit diagram.
The test is not 5v.
Connected to the mother seat, the positive and negative are not reversed.
Test on the machine to see if it can be used.
The regulator board is fixed in the housing with hot melt adhesive.
The Joule thief is also inside.
This is followed by a battery compartment, which is a single-segment skip. It is a double festival with me.
Stick it with hot melt glue.
The last is this way.
The battery box is connected to the Joule Thief.
have a test.
Finally install the switch and connect it like this on the picture.
Install the outer casing and what shape it will do. It depends on you.
Mine is like this, triangular.
With the machine trial, the mobile power test is successful!
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