In the future, there may be more electronic DIYs, but different electrical devices require different voltages. It is not always possible to buy a corresponding DC chip every time, so simply make a DC regulated power supply.
Ready to work:
Full copper wire dual 12V single 24V 30W 2.1 power amplifier board dedicated power transformer (net weight 850 grams)
Waste power supply (includes fan, heat sink, wire)
D25BX60 rectifier bridge
50V 10000uF electrolytic capacitor
LM317T voltage regulator integrated circuit
5~10K ohm adjustable resistor (3296 type)
100 ohm resistors two
1N4007 rectifier diode
Sponge baby body
It turns out that this picture:
Dismantle the waste power supply chassis:
Originally, I just wanted a metal box to dress up the transformer, but the GG on the campus didn't sell it. I had no choice but to buy the entire abandoned chassis (who didn't ask what case at the time).
The good news is that there are two heat sinks, a few bundles of wires, and a small fan. HOHOO~ (I haven’t seen it before, I laughed)
Lily map:
The next step is to solder according to the schematic. Originally, the welding work is not good, and it has to be welded without a circuit board, so its selling phase is not much better. (Things like masters?!)
The solid physics in the upper left corner can be neglected, because the first time for the 220V operation, I always worry that the capacitor is reversed and the short circuit of the horse is disfigured, so the book will be blocked in the front.
Talk about the problems encountered in the process, the sliding varistor used at the beginning is 50K with positioning ratchet rheostat, but because the adjustable minimum unit is 1K, it is very small, it will produce a large output, long stay 30V or more, helpless Had to change 3296.
The second problem is the input power, because the transformer is a double-ended output, which has 24V12V. At first, it used 24V. It may be because the voltage difference between the minimum voltage required by the voltage regulator chip is too large, so that the voltage regulator chip has not passed. It took a few seconds to get hot, and there was an impulse to put the eggs to cook, so it was changed to 12V later. Even with 12V, the output voltage can reach more than 20 volts, which makes me very happy, because the output voltage of the previously used rotating chip is lower than the input voltage.
Truth map:
I like this fan very much and solved the boiler life in the summer in advance.
Not PS:
In fact, I also feel that this thing has nothing to show off. The Fu-80 smiling duck has already done it before, and it is better than me. But if you make it, I always want to share it with you.
After all, DIY itself is a very pleasant and enjoyable thing.
Permanent magnet Dc Motor is composed of stator magnetic pole, rotor, brush, case and so on. Stator magnetic pole is made of permanent magnet (permanent magnet steel), ferrite, alnico, ndfeb and other materials, and the rotor is generally made of silicon steel laminated. Enameled wire is wound between two slots in the rotor core (three slots are provided with three windings), and its joints are separately welded on the metal sheet of the commutator. Electric brush is a conductive part connecting power supply and rotor winding. Permanent magnet motor brush USES single metal sheet or metallic graphite brush, electrochemical graphite brush.Permanent magnet Gear Motor is established using permanent magnet magnetic field of a dc motor. Permanent magnet gear motor is widely used in various kinds of portable electronic equipment or apparatus
precision instruments and meters,automobile industry, medical equipment, consumer electronics, household appliances, electric glass doors and Windows,etc., wide application range,,Permanent Magnet Gear Motor is usually used in small power occasion.
Features: permanent
magnet gear motor is a kind of rectangular pulse wave, sine wave current, in the form of hybrid permanent magnet motor. Simple structure, high reliability and high efficiency.
Method of use: the best stable in horizontal plane, installed on the permanent magnet gear motor output shaft parts, cannot use a hammer to knock,knock prone to press into the permanent magnet gear motor drive, may cause damage to internal components, and cannot be used in the case of blocked.
Operating temperature range:
permanent magnet gear motor should be used at a temperature of -10~60℃.
The figures stated in the catalog specifications are based on use at ordinary room temperature catalog specifications re based on use at ordinary room temperature (approximately20~25℃.
If a geared motor is used outside the prescribed temperature range,the grease on the gearhead area will become unable to function normally and the motor will become unable to start.Depending on the temperature conditions ,it may be possible to deal with them by changing the grease of the motor's parts.Please feel free to consult with us about this.
Storage temperature range:
permanent magnet gear motor should be stored ta a temperature of -15~65℃.
In case of storage outside this range,the grease on the gearhead area will become unable to function normally and the motor will become unable to start.
Service life:
The longevity of permanent magnet gear motor is greatly affected by the load conditions , the mode of operation,the environment of use ,etc.Therefore,it is necessary to check the conditions under which the product will actually be used .The following conditions will have a negative effect on longevity.Please consult with us should any of them apply.
â—Use with a load that exceeds the rated torque
â—Frequent starting
â—Momentary reversals of turning direction
â—Impact loads
â—Long-term continuous operation
â—Forced turning using the output shaft
â—Use in which the permitted overhang load or the permitted thrust load is exceeded
â—A pulse drive ,e.g.,a short break,counter electromotive force,PWM control
â—Use of a voltage that is nonstandard as regards the rated voltage
â—Use outside the prescribed temperature or relative-humidity range,or in a special environment.
â—Please consult with us about these or any other conditions of use that may apply,so that we can be sure that you select the most appropriate model.
when it come to volume production,we're a major player as well .each month,we rurn out 600000 units,all of which are compliant with the rohs directive.Have any questions or special needed, please contact us, we have the engineer group and best sales department to service to you Looking forward to your inquiry. Welcome to our factory.
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Shenzhen Shunchang Motor Co., LTD. , https://www.scgearmotor.com