FirstWatt F5 Turbo V3 Assembly Instruction Manual Download Page 4

F5 Turbo Assembly Instruction 

Version 2  

 

 

 

 

Page 4 

 

p.

 

Note that the MUR3020W should have their leads bended 90 deg also and then inserted 

into the PCB holes from bottom of the PCB.  Do not forget the insulation sheet for them.  It 

should be quite easy to do so as the leads of MUR3020 is just long enough to protrude out 

the hole by about 1.5mm. 

q.

 

When all the PCB screws are in position and tighten, solder all the leads on top. 

r.

 

Note that the varistors should be mounted as below.  The leads must not touch any ground 

as it carries the +ve or –ve high voltages! 

 

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Summary of Contents for F5 Turbo V3

Page 1: ...the circuit diagram for reference Notes a The Q7 and Q8 is in TO 92 package I have also put TO 220 package pads in the PCB if the original transistor recommended by Nelson is used b J7 is a pin heade...

Page 2: ...direction of the P3 as shown below c Solder the 3W resistors d Solder the Jfets K170 and J74 Q1 and Q2 Then solder the transistors Q7 and Q8 e Lastly solder the E capacitors f Note that J15 and J16 TH...

Page 3: ...screws total 4 from top and screw in a 10mm spacer post at the bottom of the pcb n When mounting the mosfet fix them onto the heat sink as shown Bends the leads about 90 deg upwards Put the PCB on to...

Page 4: ...the insulation sheet for them It should be quite easy to do so as the leads of MUR3020 is just long enough to protrude out the hole by about 1 5mm q When all the PCB screws are in position and tighte...

Page 5: ...soldering of any parts to prevent short circuit to the ground plane Due to the narrow gap the supply voltage of this PCB should not be more than 40V 4 Tuning procedures a Before power up adjust P1 and...

Page 6: ...oltage across the R20 and R23 should be 0 333V Note that the voltage across R20 and R23 will not be the same but should be close within 10 if the mosfet are well matched g Then repeat the step e until...

Page 7: ...t DC offset and voltage across R20 I think two meters is a minimum l For P3 pot adjustment refer to Pass s article for details m Picture of a complete set F5 Turbo This set use Airlink 625VA 25Vx2 tra...

Page 8: ...Anlr THD N Ratio Left Float input lower noise 1 3 Magenta Solid 1 Anlr THD N Ratio Left 2 1 Green Solid 1 Anlr THD N Ratio Left Grounded input higher noise 2 3 Red Solid 1 Anlr THD N Ratio Left 0 001...

Page 9: ...Style Thick Data Axis Comment 1 1 Red Solid 1 Fft Ch 1 Ampl Left Set 3 32V supply 1 2 Magenta Solid 1 Fft Ch 2 Ampl Left 180 10 170 160 150 140 130 120 110 100 90 80 70 60 50 40 30 20 10 0 d B r A 20...

Page 10: ...34 1R3W R36 47R R40 15k J1 1 J1 2 J2 1 J2 2 J3 1 J3 2 J4 1 J4 2 K A LED1 J5 1 J5 2 C1 1000uf 35V C2 1000uf 35V C10 0 22uf C11 0 22uf C6 0 22uf C5 0 22uf Screw J6 Screw J8 Screw J9 Screw J10 Screw J11...

Page 11: ...17 J15 J16 4 7k TH1 with shrink tube China Varistor negative temp 4k7 2 SIP 2P 18 R25 26 10K Xicon RES BODY 060 CENTERS 400 2 RM10_1 4WR 19 R3 4 10R Xicon RES BODY 060 CENTERS 400 2 RM10_1 4WR 20 R40...

Page 12: ...w w w F E T A u d i o c o m...

Page 13: ...w w w F E T A u d i o c o m Position X Y 0 0...

Page 14: ...w w w F E T A u d i o c o m...

Page 15: ...w w w F E T A u d i o c o m...

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