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eBay 150W 72V Constant Current Electronic Load Battery Discharge Capacity Tester input voltage : 0-15v /0-72V load current :0-10A/0-2A The voltage is the range of the power supply voltage value and cannot be adjusted. The current is adjustable for this load test. After adjusting the desired value, test with constant current. Test the maximum discharge current of the power supply, check whether the power supply current is real, and use the power product aging test. Remarks: How many W are all in the power dissipation of the NMOS tube, and the board voltage is within 300V. You can also increase the power in parallel with multiple blocks. 1. The basic circuit form is that TL431 provides reference voltage, sense resistor, LM324 operational amplifier error amplification, Together with the MOS tube, it forms a constant current circuit. Use 4 MOS tubes with CPU heat sink. 2. Our shop has 4 sets of 110N8F6 110A 80V packaged in T0-220 3. The parameters of the original circuit diagram: 75NF75 75V 75A 150W 4. Substitution: Model 80NF70 IRF3205 HRF3250 IRF1010 IRF2807IRF1405 047an08ao, etc., also available for TO-247 high-power packaging tubes such as IRF 250 260 2. When the board is powered by a 12V switching power supply, the wire can be soldered to the right + -. Or solder the DC seat and use 2 wires to short-circuit the +- solder joint. The 4 rectifier tubes can be welded! ! ! 3. The heat sink cannot be connected to the negative metal of the 12V DC seat, and the two cannot be connected to the metal shell at the same time! ! 4. When the board is connected to the digital dual display meter, the power supply of the meter header is connected with the small red line on the left end of the board: +12V Note: Do not connect the thin black wire to GND! (It will be inaccurate if the current is connected)! ! ! 5. A+-the current thick red and black wire connected to the meter head V+ is connected to the thin yellow wire voltage test of the meter head, IN is the test input terminal, and the red and black test terminal is connected to the power supply under test. The FAN terminal is connected to the cooling fan. 6. Open the cap of the knob and tighten the screw. 7. The power tube is coated with thermal grease and screwed directly to the heat sink, and the heat sink must be connected before power-on debugging! Otherwise, the power tube may be burned out! Note: The positive and negative poles of the tested power supply must not be reversed, otherwise the MOS power tube will be burned out! Anti-reverse connection: the anode of the input terminal IN of the board is welded with a high current diode such as 20A10 Payment Shipping Refund Payment EBAY Managed Payment. But we only Accept your Ebay Address, please Make sure it’s 100% right. Payment must be received in 5 business days of auction closing. Please leave note for your special request (e.g. Colors or Size) in PayPal when you pay the order. Any special request cannot be accepted after 24 hours of payment, because most of orders will be processed instantly and same day dispatched. Shipping 1. We only ship to the confirmed address provided by eBay. please make sure your ebay address is 100% matches the address you would like us to ship to. If not, please let us know before we sent you the package, or we will not be responsible for any loss. hope you could understand. 2. Orders will be processed instantly and dispatched within 1-3 business days except hoilday, so we do NOT accept any email/message note after you place orders. 3. All package need to wait 30 days,Please take care it.Less than 30 days,we can’t take a refund. Refund If you can’t receive the product within 2 months (60 days), please contact with us,we promise to payback 100% of your money. We ensure our products work normally before post.If the products is broken before arrival to you,all you should do is taking a photo to show us our broken product.We promise to payback 100% of your money. If the item is defect when you receive it or you are not satisfied with it, please return it within 14 days for a replacement or money back. But the items must be back in factory condition. Please contact us and double check the return address before you return it. If is item is defective in 12 months, you can return it to us. We will send you a new replacement after receiving the defective item.
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