background image

www.analogmetric.com

5687

5687

5687

5687 Tube

Tube

Tube

Tube Pre-Amplifier

Pre-Amplifier

Pre-Amplifier

Pre-Amplifier

User

User

User

User Manual

Manual

Manual

Manual

Analog

Analog

Analog

Analog Metric

Metric

Metric

Metric

www.analogmetric.com

[email protected]

Copyright© 2009 All Rights Reserved

Summary of Contents for 5687

Page 1: ...e Tube Tube Pre Amplifier Pre Amplifier Pre Amplifier Pre Amplifier User User User User Manual Manual Manual Manual Analog Analog Analog Analog Metric Metric Metric Metric www analogmetric com sales analogmetric com Copyright 2009 All Rights Reserved ...

Page 2: ...es moderate gain minimum noise and high linearity to the amplified signal The output stage uses 5687 or its equivalent 6N6 T as buffer to deliver sufficient power to the load In additional to pre amplifing input signal this amplifier is capable to drive headphone directly whose impedance is often very low The signal paths of this PCB layout is designed in symmetry for both channels Dedicated power...

Page 3: ...wo 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 s...

Page 4: ...ROCEDURES PROCEDURES PROCEDURES PROCEDURES 1 Hook up all the components according to the schematic part list and photos Notice to the polarity of the high voltage electrolytic capacitors C1 C4 C6 C9 There are no polarities of the thin film capacitors 2 Apply either one or two 260V DC to J3 and 12 6V DC to J4 Connect the GND of these two connector If you only have one 260V DC connect the two 260V D...

Page 5: ...analogmetric com 5 CHECKLIST CHECKLIST CHECKLIST CHECKLIST 1 The polarity of the high voltage capacitorsC1 C4 C6 and C9 2 The supply voltages at connectors J3 and J4 Check the two DC pins of J3 whether connected to power supply 3 Short the GND of J1 J2 J3 and J4 together If you have any problem in assembly please contact us by email to tech analogmetric com ...

Reviews: