1pc HA5000 Fully Discrete Headphone Amplifier PCB

Description: 1pc HA5000 Fully Discrete Headphone Amplifier PCB Note: This is a bare PCB Compared with the commonly reproduction of HA5000, we improved: FET input and The BJTvoltage amplification stage use Two-stage buck regulator filter,Two low-pass filter (with a corner frequency of 1.6Hz) prevents power noise from being introduced into the amplifier. Provide purer power supply (close to battery) Integrated earphone protection circuit. total 4 MOSFETs for for power output. all-in-one design, single-point grounding, ground resistance is close to the 0.02 ohm resistance value, low noisedesign. PCB is small and flexible, more suitable for all kinds of chassis installation. Schematic & key point of debuggingPCB comes with component parameters for easy installation. We only refer the schematic of the amplification part of the circuit. If you need full circuit parameter, please read the component value with the PCB by yourself; we do not provide additionally. please keep test point voltage close enough to it, +-20% is also permitted.InstructionsSince the PCB holes are plated through, you only need to solder the parts from the bottom of the board. Do not drill or enlarge the holes because that would damage the through-plating. Clean both sides of the blank PCB with paper towel and isopropyl alcohol or electronics flux remover, then solder the components to the board, starting with the lowest profile parts. Make sure the correct part goes into each position on the circuit board. Measure each resistor with your multimeter to ensure it's the proper value. Clean up the solder flux residue from the board with isopropyl alcohol (or electronics flux remover) and a brush. Inspect all solder connections carefully, using a magnifying glass, to make sure there are no solder bridges or cold solder joints. Use a multimeter in ohms scale to check for short circuits. As a minimum, you should verify that the V+ and V- DC inputs are not shorted to ground, or to each other, and that the output pad isn't shorted to ground. Correct any mistakes before proceeding to the next phase. Tips: please prepare external heatsink. sticking on bottom of amplifer chassis is a great choice. Adjust 1K-VR clockwise to the maximum resistance value before powering on. After power-on, slowly adjust 1K-VR counterclockwise until 47mV can be measured between AB and CD. slowly adjust 200R-VR counterclockwise until 1mV can be measured between G-OR and G-OL..Parts listPicsPayment Method: PayPal preferred Shippment: 1.We provide free shipping to international via China Post Airmail or Hong Kong Post Airmail, and every parcel will be registered with tracking number. We can also ship by UPS/EMS/DHL/FedEx for alternative shipping method for corresponding fees. Please let us know before payment if you need split shipment. 2.International shipping requires complicated shipping procedures (such as both countries customs, transit stations etc.), also will be affected by many factors, such as holidays, weather conditions etc, If you have not received your shipment within 30 days from payment, please contact us. 3.Time of Delivery:Based on the China Post Airmail or Hong Kong Post Airmail and our experience, kindly please be noted that To United States / United Kingdom / Australia, it takes around 10-15 business days; To Canada, it takes around 12-18 business days; To Brazil / South America, it takes around 25-35 business days. To Italy / France / Spain / Germany/ Eastern Europe, it takes aournd 15-20 business days. Returns & Replacements & Repair: We accept returns & replacements within 30 days from the day the customer receive the products, please make first contact within 30 days from receiving the order. Products should be returned in original condition. As a benefit to our customers, we also provide repair within 3 months from the day when this item is shipped out, after repair is done, we will send you the item, but the customer should pay both shipping ways. Feedback: 1)Your Feedback is really important to us, please take a few seconds to leave great feedback if you are satisfied with our product or service, thank you so much! 2)We always offer the lowest price for best goods and service to you. 3) Please contact us before leaving neutral(3 stars) or negative(1-2 stars) feedback.We will try our best to solve the problem and leave you a happy shopping mood here. Thank you!

Price: 10.14 USD

Location: Wuhan

End Time: 2024-11-24T03:12:59.000Z

Shipping Cost: 0 USD