Enclosure not stated · 1 knob

Nine Volt Nirvana Tape Measure Boost

Based on the Nine Volt Nirvana Tape Measure Boost· 2 other boards clone it

From the vendor

A single-transistor 2N2222 clean boost with collector-to-base feedback bias and an output level trimmer.

Transistor substitutes: 2N5088, BC108, ECG123, 2N3904.

The schematic is in the post. Open it at Revolution Deux. No KiCad fragment has been drawn for this circuit yet.

Ref	Value	Normalized	Type	Notes
Resistors 4
R1	470K	470k		read from the schematic by eye
R2	100K	100k		read from the schematic by eye
R3	10K	10k		read from the schematic by eye
R4	150	150		read from the schematic by eye
Capacitors 2
C1	1u	1u		input; read from the schematic by eye
C2	1u	1u		read from the schematic by eye
Transistors 1
Q1	2N2222	2N2222		read from the schematic by eye
Potentiometers 1
Volume trim	100K	100k	Potentiometer	trimmer; read from the schematic by eye