Before heading straight to the main material, we should first know what is Gacun. If you are an electronics technician who often deals with PSU (Power Supply Unit) TV, then the term Gacun is not unfamiliar. Because the Switching Module of Gacun is often applied if the problem of TV PSU is difficult to overcome.
Kit / Module Power Supply Gacun is a very innovative breakthrough. Can be applied to any regulator including TV, as long as the transformer transformer is still good. With this kit the technicians are very helpful to replace the original regulator circuit.
In this article we do not discuss more deeply about how to apply / install Gacun for TV regulator, but we will make power supply amplifier by using this Gacun module.
Apparently Gacun is very flexible, in addition to the iron transformer prices soar, until finally Gacun module can be a solution in making SMPS cheap. Supporting components can also be obtained from used goods such as TV mainboard and used computer PSU. Function of Gacun in this application as driver of ferrite core transformer / switching transformer.
The required materials are as follows:
1. Switching regulator module / Gacun
2. Transformer: For the transformer we can roll it yourself or the transformer from the former switching regulator that has been damaged and we use the transformer, the easiest looking former TV regulator and used computer PSU
3. Supporting components include: transistor, capasitor, optocoupler, zener diode, resistors etc.
4. Measuring tool: Multi Tester and LCR meter (if any).
How to make coils and count the number of coils.
Often we make coils that mostly do not understand how many coils should be wrapped and what their inductance values are after the coil and what is the ideal, it is related to the ferrite material, the airgap and the physical size of the ferrite.
The better the permeability of ferrite (Bmax) the less the number of coils, the greater the airgap the more the coil and the greater the physical size of the ferrite the less the number of coils, so with the reasoning obtained conclusion, if one or the three elements are different then the number of coils is of course different.
Well how many coils that fit and efficient? Based on repeated tests the ideal inductance value is 500 μH if we have an LCR meter.
Data wire coil :
NP / Primary Coil = 45 twists (not self-made standard)
NS / Secondary Coil = 2 volts / coil (depending on need)
The size of the diameter of the wire determines the amount of power / ampere obtained.
How to wrap wire switching transformer as in the picture, do not upside this one of the keys to successful SMPS Gacun.
Fet Gacun can be paralleled in order to handle large power. However, it is recommended if we have successfully used the standard Gacun.
