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Seller Store dy-laser
(467) 100%,

Location: Wu Han
Ships to: US,
Item: 395464833785

Return postage will be paid by:Buyer
Returns Accepted:Returns Accepted
After receiving the item, your buyer should cancel the purchase within:30 days
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Supported Modes:—
Receiver Combo Features:—
MPN:Does Not Apply
Year Manufactured:—
Surround Sound Formats:—
Audio Outputs:—
Number of Outputs:1
Colour:Green
Amplifier Class:—
Zero:Zero
Type:Power Amplifier
Unit Type:Unit
Audio Inputs:—
Number of Channels:1
Number of Inputs:1
HP-2:HP-2
Features:—
Country/Region of Manufacture:China
Unit Quantity:1
Power:—

HP-2 Class A Parallel Regulated Power Supply – PCB & DIY KIT & Finished Board Note：The product is Test OK finished board with 2 Type I 10000uF/50V filter capacitors. Description:HP-2-PSU super-parallel class A regulated servo power supply, low internal resistance, high precision, excellent transient response, very suitable for grinding DAC, preamplifier, power amplifier in the voltage amplification stage and input stage, the effect is good, the actual listening The low frequency is rich and the high frequency is delicate.The standard version uses ST BD139-140 as the adjustment tube, and can also be replaced with a tube of the same foot such as Toshiba A1358-C3421, but please pay attention to the pressure resistance problem, different tubes will have a slight effect on the tone, BD139-140 has a better High cost performance, and the A1358-C3421 will feel better.The output voltage and input voltage (DC) are recommended to be no less than 4V differential pressure. A 5-8V differential pressure is recommended. If the differential pressure is too low, the filter and voltage stability will be affected.If there is too much pressure difference, a large amount of heat will be generated. Please pay attention to the heat dissipation of the tube.Reasonable setting of input current, generally set higher than AMP quiescent current 30%, too high will make the sound will be dull, high voltage and high current, please pay attention to the heating problem of the adjustment tube, using the chassis cooling is a good choice.Highlights:1. Use double bridge rectification, one transformer can be used when configuring dual independent system2, very low noise <350UV, very high voltage stability. After the thermal stability, the full / no-load regulation rate is <0.5%, the voltage does not drop after the load3, the voltage can be adjusted from 8V-60V according to requirements. The current can output 10MA-1.5A (depending on the rectifier tube and the adjustment tube)Remarks:1. Choice of R1： Output current = 0.65V / R1 R1 = 10R version of the positive and negative power supply are reserved for two resistance bits, generally with the front stage or voltage amplification level, select a group of 10R can be, if you want to play more extreme, you can press the above Formula, single or double resistance through the reserved resistance bits on the board to calibrate the desired sound2. Selection of R2：When the output voltage is 12-30V, use about 10KWhen the output voltage is 30-50V, it is about 15K.When the output voltage is 50-70V, it is about 22K.3. R3 selection：When the output voltage is 12-30V, use 4K-5K,When the output voltage is 30-50V, use 11K-12KWhen the output voltage is 50-70V, use 12-16K Shippment:1.Every parcel will be registered with tracking number. 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 et. If the transportation time is not normal, please contact us.

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