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Tagboard Effects

Dallas Rangemaster PNP negative groundVerified

Based on the Dallas Arbiter Rangemaster· 36 other boards clone it

Category
Boost
Controls
Boost
Build
Vero· 14×8· 9 cuts, 2 links
Layout
Verified · Tagboard Effects marks it as built and working
Tags
Booster
Open the layout at Tagboard Effects

From the post

Request. Moving on from the Fourbanger, here's a compact layout for the standard Rangemaster but with a voltage inverter so you can use the better quality PNP transistors but with a negative ground. Note the IC is rotated 180° to how we usually mount it, pin 1 bottom right.

To make this a little more versatile I'd be very tempted to lose the input and output caps (and shave off a column) and add a 4P3T rotary switch to swap input and output caps to offer a greater range of frequencies.

Maybe having:

Input caps

C1 - 5n

C2 - 22n

C3 - 47n

Output caps

C4 - 10n

C5 - 47n

C6 - 100n

or whatever suits your taste and equipment.

Oh and the collector/emitter swap cheat version for Travis, not sure how well this will work though!:o)

Schematic

This is a board layout, a drawing of where each part goes, and the post may link the schematic it was drawn from. Open the layout at Tagboard Effects. No KiCad fragment has been drawn for this circuit yet.

Parts list 12 rows

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Check before you build · 1 value the reader of this layout was not sure of
  • 5n at the left edge of the board: printed clearly, unusual value
RefValueNormalizedTypeNotes
Resistors 4
×1100K100kread from the layout by eye
×168K68kread from the layout by eye
×11M1Mread from the layout by eye
×1470K470kread from the layout by eye
Capacitors 4
×15n5nread from the layout by eye
×110n10nread from the layout by eye
×347u47uelectrolytic; read from the layout by eye
×110u10uelectrolytic; read from the layout by eye
Transistors 1
×1PNP germaniumPNP GERMANIUMlegend: Transistor is PNP germanium; read from the layout by eye
ICs 1
ICICL7660SICL7660Smounted upside down; read from the layout by eye
Potentiometers 1
BoostA10KA10kPotentiometerread from the layout by eye
Trimmers 1
×110K10kread from the layout by eye

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