Analog Metric 5687, Руководство пользователя

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[[[[5687 5687 5687 5687 Tube Tube Tube Tube Pre-Amplifier Pre-Amplifier Pre-Amplifier Pre-Amplifier ]]]] Analog Analog Analog Analog Metric Metric Metric Metric
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FEATURES
FEATURES
FEATURES FEATURES
• One 12AU7 and two 5687 (6N6-T) vacuum tubes.
• Circuit design comprising two stages: common-cathode stage and followed by a
buffer stage.
•
Voltage Gain: 22dB
• Bandwidth: 850KHz
•
Input Sensitivity: 1Vrms
• Input impedance: 100k
Ω
• Ouput impedance: 75
Ω
• Two single-ended inputs and two single-ended outputs.
• Symmetric layout design and signal paths with minimum parasitic.
• Dedicated ground and power rails layout design.
• Two large reservoir decoupling capacitors for power rails.
• Power requirements: one 260V(100mA) DC and one 12.6V(2A) DC.
• PCB dimension: 18mm (W) x 11.5mm (L)
• PCB thickness: 2.4mm, double layer, 2oz copper.
PRECAUTIONS
PRECAUTIONS
PRECAUTIONS 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 (1-3A) socket to limit the supply current in case of
short circuit or incorrect assembly.
• Double check the assembled components with the schematics.
• 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.