19.5V 180W Linear Power Supply for Laptop
Why digitaland analog audio devices should use a linear power supply? Linear Power Supply(LPS) is a better noise filter. Noise isn’t produced from LPS, unlikeregularswitching power supply has electromagnetic interferences (EMI) and existingradio frequency interferences (RFI) caused by power consumption by othermachines (e.g. vacuum, the drum rotor motor). Sound and noise are not affectedby these power fluctuations. and difference chip has different sound.
The audio data device or laptop that power supply Pre-Regulator must be faster response than all the power supplies regulators in the device, linear and linear and low noise anyway,
Upgrade Pyramid Universal Compact Bench Power Supply - 12Amp Linear Regulated Home Lab Benchtop AC-to-DC 12V Converter w/ 13.8 Volt DC115V AC 270-Watt Power Input, Screw Type Terminals - Pyramid PS14KX (This models no cooling fans, Cooling Fan model PS14KX.5). For Laptop audio work and high end audio interface, or another electronics device.
After upgrading, we tested by Dell Precision M7520 7520 Mobile Workstation, 15.6 inches FHD (1920x1080) Intel Core i7-6820HQ, 32GB DDR4 Ram, 512GB Solid State Drive, Windows 10 Pro.
1.Use the decode cable plug in to Dell Precision7520, the output ripple about 3mV RMS at 70% battery charging, the original180W charger ripple is 30mV to 80mV RMS at 70% battery charging.
2.The ripple is about 30mV when the laptop turns on, the original 180W charger ripple is 300mV RMS when the laptop turns on.
3.The upgraded PSU is a noise filter. It can shield noises from the AC lines. But the original PSU cannot do it.
4.This PSU doesn’t need the fan cooling for the180W laptops.
5.Use this PSU play music, it’s warm and has beautiful detail.
6.The PSU doesn’t need the fan cooling for the laptop.
You can tell us what device you want to use this PSU, if this PSU is used for audio interface or Master Clock or Word Clock generator, contact us, it must use some special parts.
Input: 120VAC 270W
Output: 19.5V/9.23A 180W
If you want cooling fan model PS14KX.5, contact us.
Pyramid PS14KX and parts about $150 or contact us for others
Hand make labor $400 (the technician need over time to finish the job, part time House anything repairs minimum labor payment $250 per day recently)
Total $650.including one year labor warranty and tech support.
If you don’t know how to decode DELL laptop or HP laptop DC charge cable, contact us to make it, Labor $60, 6 feet 10 AWG oxygen-free,99.9% pure copper speaker cable and the plug connector and decode chips about $20,total $80.
