Electronic load tester power 150W 15V 0-10A /60V 2.5A LM324 simple electronic | Instrument Parts & Accessories

Electronic load tester power 150W 15V 0-10A /60V 2.5A LM324 simple electronic | Instrument Parts & Accessories

The basic form of the circuit is that the TL431 provides the reference voltage, the current detection resistance, the amplifier error amplification,

The constant current circuit is formed with the MOS tube. 4 MOS tubes are used to match the CPU radiator.

The parameters of 75NF7580A, 75V, 160W 4 packages are packaged for TO-220

Substitution:Model80NF70IRF3205HRF3250 IRF1010IRF2807IRF1405 047an08aoWaitalso availableIRF 250260 TO-247 package tube

The board is powered by a 12V switching power supply, and 4 rectifying tubes can not be connected.

INIt's the test input, and the red and black test end isConnect the measured power.

When the board is connected to a digital double header A+ - head currentRoughage and black line

The voltage test of the V+ header

Power supply for +12V headerThe Thin Red Line Fine black line is not connected

The knob pried the cap open.The screw can be tightened.

Power tubeCoated with thermal grease screwed directly to the heat sinkupper

The suite is illustrated.Pay attention to self - Preparation:12V transformer or switching power supply

Double display head, red and black terminal.Radiator!CPU's radiator is available, one is 75 WATTS)

This suite of circuit diagrams:

The previous 300W reference circuit diagram

Plate size 10*10cmA tube packed with TO-220,

If the radiator is fixed to the board, a heat-resistant insulating sheet is underneath to prevent the TO-247 pad under short circuit.

Pay attention to the connection of the adjustable potentiometer! Don't be wrong!

Simple shell,Heat dissipation must be done well

U do the inorganic shell: