Analog Metric 2A3 Manual de usuario descargar pdf (Pagina 4)

[300B SE Valve Amplifier Kit] Analog Metric

www.analogmetric.com

● THD+N < 5% @1kHz

● Maximum Output Power: 8W at 8 Ohms

● Output transformer 15-20W:

Primary impedance: 2.5k/3.5k Ohms 120mA

Secondary impedance: 4, 8 and 16 Ohms

● Stereo single-end input and output

● Power requirements: one or two 300-350V DC (total 250mA), 6.3V AC/DC (1.5A),

and two 5V AC/DC (1.5A).

● PCB dimension: 196mm (W) x 175mm (L)

● PCB thickness: 2.4mm, double layer, 2oz copper.

PRECAUTIONS

• Do not use any body parts to touch the metal parts of the kit after power up or power

off, since the high voltage capacitors may not fully discharge. It may cause serious

electric shock.

• Use a power transformer with fuse (3A) socket to limit the supply current in case of

short circuit or incorrect assembly.

• Double check the assembled components with the part list.

• Do not attempt the measure the voltage by multimeter with hand after power up. The

probes of the multimeter should be mounted by some stands to the points of the

measurement before switching on the power supply.

• Turn off the power supply if you observe any smokes or hear strange sound coming

out from the transformer or board. If there is short circuit, the transformer will be

getting very hot shortly.

PROCEDURES

1. Solder the resistors on the top of the board. The resistance label of the Dale resistors

should face upward for easy of future debugging or modification.

1 2 3 4 5 6 7 8 9 10 11

Sin comentarios

Analog Metric 2A3 Manual de usuario Pagina 4