aion Ephemeris Manual - Page 3

Browse online or download pdf Manual for Music Equipment aion Ephemeris. aion Ephemeris 10 pages. Jfet boost/preamp

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PARTS LIST

This parts list is also available in a spreadsheet format which can be imported directly into Mouser for

easy parts ordering. Mouser doesn't carry all the parts (most notably potentiometers) so the second tab

lists all the non-Mouser parts as well as sources for each.

View parts list spreadsheet

PART

VALUE

33k

4k7

8k2

15k

10k

100R

R10

10k

R11

10k

R12

390R

RPD

LEDR

10k

47n

22n

1uF

10uF

OMIT

1uF

3n3

OMIT

1uF

C10

47uF

C11

100uF

C12

100n

1N5817

2N5457

2N5088

GAIN

10kC

VOLUME

50kA

BRIGHT

SPDT on-on

EPHEMERIS JFET BOOSTER

→

TYPE

Metal film resistor, 1/4W

Film capacitor, 7.2 x 2.5mm

Electrolytic capacitor, 4mm

Electrolytic capacitor, 5mm

Film capacitor, 7.2 x 3.5mm

Film capacitor, 7.2 x 2.5mm

Film capacitor, 7.2 x 3.5mm

Electrolytic capacitor, 5mm

Electrolytic capacitor, 6.3mm

MLCC capacitor, X7R

Schottky diode, DO-41

JFET, N-channel, TO-92

BJT transistor, NPN, TO-92

16mm right-angle PCB mount pot

Toggle switch, SPDT on-on

NOTES

Power supply filter resistor.

Input pulldown resistor. Can be as low as 1M.

LED current-limiting resistor. Adjust value to change LED brightness.

Can use 10uF here and leave C6 empty. See build notes.

Can omit and use 10uF for C5. See build notes.

Can use 10uF here and leave C9 empty. See build notes.

Can omit and use 10uF for C8. See build notes.

Reference voltage filter capacitor.

Power supply filter capacitor.

Can substitute BC549C (rotate 180 degrees).

Reverse audio (reverse log or antilog) taper.

Audio (log) taper.