AMPLIFICATORE PCB DA 100W 8OHM - 2 pezzi

MODULO AMPLIFICATORE

IN CLASSE "AB"

DRIVER UPC 1342V

PCB DA 100W 8OHM - 150W 4OHM

SENZA RADIATORE!

PER ULTERIORI INFO VI PREGO DI CONTATTARMI

components: NEC Corporation following the excellent performance of the

broadband low distortion 50W drive circuit UPC1225H, in order to adapt

to the requirements of high-power and launched a new generation of audio

driver IC - UPC1342V, the IC in addition to all the advantages of the

UPC1225H and basically the same peripheral circuits, and its output

voltage deviation is smaller (plus or minus 5MV), the voltage adaptive

range is wider (plus or minus 20 ~ plus or minus 70V, to promote the

power more abundant, can be used two UPC1342V composed of 2 * 150W

amplifier circuit structure is shown below. Plus or minus 20 ~ plus or

minus 70V), to promote the power is more abundant, known as the first

choice of burners homemade amplifier IC. can use two UPC1342V 2 * 150W

amplifier circuit structure is shown below. (Now the temperature

complementary tube is 669)

components: the use of new Toshiba high-power tube, TTC5200/TTA1943

This pair of tubes has a very high test evaluation, the sound is very

dense and granular sense of meticulousness, density is also extremely

high, but the feeling is just right, the sound is more mature,

telescoping, with a certain sense of wetness and composure, quite

voluptuous and flattering. The control of the pair of tubes is

excellent, the last stage of the working current in a wide range of

changes in the performance of the performance is quite consistent, will

not be due to the size of the working current of the phenomenon of

obvious transformation of the tone. The triode parameters: 15A, 250V,

This board line: UPC1342V direct push ON high-power tube line, the line is simple, stable, very transparent sound.

A current: in the transformer, radiator temperature allows, try to

adjust the static current it, feel the class A amplifier (warm,

transparent, good control) of the moving charm! This board debugging

methods: This board has an adjustable multi-turn potentiometer for the

left and right channels, used to adjust the static current of the power

tube (Class A current). After the completion of this board welding,

before powering up, the first adjustable potentiometer counterclockwise

rotation to the head (at this time the static current is 0). Power on

the sound test, confirm that there is no problem with the sound, and

then slowly adjust the potentiometer clockwise, while detecting the 0.22

ohm resistance voltage (such as 44mV, the static 200mA, mV file to

measure the power tube's E to the output can also be), will be adjusted

to the desired value of the static current. Note: Because of the role of

static current will be pulled down a little bit, you need to test and

debug many times.

Recommended voltage: DC25-55v*2, it is recommended to adjust the static current to 100mA for each pair of tubes;

power: according to the different power supply voltage, different

speaker impedance, power 20-150w When DC50v power supply, you can output

100w/8 ohms, 150w/4 ohms

board size: 84 * 61mm; power tubes can be installed horizontally, space

compatible with the Sanken tube Printed board 2mm thick, 70um copper

foil (copper thick is the hard truth)

Midpoint voltage: 1mV or so

Signal-to-noise ratio: 108dB, noise level: 0.2mV