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RK100 Pre-Amp: RK100 Schematic Design By: Martin Kidd Drawn By: Martin Kidd 07/06/2011

The document is a schematic for the RK100 pre-amp and effects loop circuit designed by Martin Kidd. It includes 3 pages detailing the pre-amp, effects loop, and output stage/power supply sections. Key components include tubes, capacitors, and resistors used in the signal path and power regulation. The schematic provides a detailed circuit diagram for technicians to understand and work on the RK100 amplifier design.

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tano2265
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729 views5 pages

RK100 Pre-Amp: RK100 Schematic Design By: Martin Kidd Drawn By: Martin Kidd 07/06/2011

The document is a schematic for the RK100 pre-amp and effects loop circuit designed by Martin Kidd. It includes 3 pages detailing the pre-amp, effects loop, and output stage/power supply sections. Key components include tubes, capacitors, and resistors used in the signal path and power regulation. The schematic provides a detailed circuit diagram for technicians to understand and work on the RK100 amplifier design.

Uploaded by

tano2265
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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RK100 Schematic

RK100 Pre-amp
Design By: Martin Kidd

Drawn By: Martin Kidd

07/06/2011

G F E

220k
100 pF .0022
Input 100k
100k 100k 220pF
470k 330 pF
68k .022 .033 220k

470 pF 470 pF
1M 33k
43k
250k lin

2N5462 470k 470k


1M log
470k
2.2uF 1k5 0.1
.033
500k log
Tandem 470k
1 meg 2.2uF .033
2k7 15k To Effects
Front Panel 1k5 500k log
Tandem Send Socket
Footswitch
1k5
100k 25k lin
100k 10k
Low Voltage
Supply

Note: All capacitors 400V unless otherwise stated. All resistors ½ W unless
otherwise stated
RK100 Effects RK100 Schematic

Loop Design By: Martin Kidd

Drawn By: Martin Kidd

07/06/2011
22k ¾-Watt
H.T. D
47uF
450V

220k
.033
Effects Send Effects Return

1k5
Master Volume
1 meg To Phase Splitter
1 meg log

Note: All capacitors 400V unless otherwise stated. All resistors ½ W unless
otherwise stated
RK100 Schematic
RK100 Phase Splitter and Design By: Martin Kidd
Output Stage Drawn By: Martin Kidd
D EL34 EL34 07/06/2011
or 6L6 or 6L6
1k 16 ohm
4W

8 ohm
10k
10k
91k 100k
O/P Valves 1 & 4
100 pF .033 To Valve
O/P Valves 2 & 3
4 ohm
.033 Failure Fuse B+
Holders

From .022
Master 220 10k
Volumes k 10k

1 meg
Bias common
Supply 1k
470 R EL34 or EL34
1 meg 4W or 6L6
6L6
H.T. C

0.1 .0047
25k lin 10k

47k 100K
4k7
0.1
Note: All capacitors 400V unless otherwise stated. All resistors ½ W unless
otherwise stated
RK100 Power Supply
B C D E F G
+
Standby
100R 7W 10k 3W 10k 3W 10k 3W 10k 3/4W
Switch 4 x 1N4007

230V
Brown 50 + 50 uF 50 + 50 uF 3 x 47 uF 450V
500V 500V

High Tension
Winding 320V ac
Mains
Switch Bias Supply

1N4007
115V EL34/6L6
Yellow Bias Switch

10k 22k preset

100V Bias winding 50V ac 100 uF 63V


Orange 220k 220k

Mains 6.3V ac to all heaters


Fuse 1N4007
Low Voltage
Supply

12V ac 2200 uF 25V


RK100 Schematic

Design By: Martin Kidd


Blue 1N4007
E Mains fuse: 220 - 240 Volt operation T3.15A Drawn By: Martin Kidd
100 - 120 Volt operation T6.3A
L N 07/06/2011

Note: All capacitors 400V unless otherwise stated. All resistors ½ W unless
Mains Inlet otherwise stated
RK100 Schematic

Design By: Martin Kidd

Drawn By: Martin Kidd

07/06/2011
RK100 Valve failure Fuses

From O/P Valve 1 & 4 From O/P Valve 2 & 3


Cathodes Cathodes

150K 2W 150K 2W

Fuse: T500
Low Current Fuse: T500
Low Current LED
mA mA
LED

1R 1W 1R 1W

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