OSH Park
Shared projects
Lithium
by
wouterdevinck.
2
layer board of
2.09x1.12
inches
(52.96x28.52
mm).
Shared on
July 20th, 2015 11:47.
5 Watt Guitar Amplifier - LM4950
by
Blueberry.
2
layer board of
3.74x2.50
inches
(94.92x63.50
mm).
Shared on
July 20th, 2015 10:44.
A small practice amplifier for guitars based on the LM4950 power amp; specifically designed for a bass guitar. Intended for a single 8-ohm speaker.
Parts list:
C1 - CAP ALUM 220UF 20% 35V RADIAL, DigiKey p/n: P12411-ND
C2, 3, 4 - CAP ALUM 10UF 20% 50V RADIAL, DigiKey p/n: 493-11003-1-ND
C5, 6, 7 - CAP CER 0.22UF 50V 10% RADIAL, DigiKey p/n: 445-8625-ND
C8 - CAP FILM 1UF 10% 250VDC RADIAL, DigiKey p/n: P10979-ND
C9 - CAP ALUM 100UF 20% 16V RADIAL, DigiKey p/n: 493-4638-1-ND
C10 - CAP CER 82PF 50V 5% RADIAL, DigiKey p/n: 445-4725-ND
C11 - CAP FILM 0.39UF 5% 63VDC RADIAL, DigiKey p/n: 495-4846-1-ND
C12 - CAP TANT 1UF 35V 10% RADIAL, DigiKey p/n: 478-4168-ND
C13 - CAP CER 10UF 16V 20% RADIAL, DigiKey p/n: 445-8550-ND
D1, 2 - DIODE SCHOTTKY 100V 1A DO204AL, DigiKey p/n: SB1H100-E3/73GICT-ND
D3 - LED 5MM GREEN CLEAR 527NM 30DEG, DigiKey p/n: C503B-GCN-CY0C0791-ND
J1 - CONN JACK POWER 2.1MM PCB, DigiKey p/n: CP-102A-ND
J2 - CONN PHONE JACK 2COND SGL CLOSED, DigiKey p/n: SC2014-ND
J3 - TERMINAL BLOCK 5.08MM 2POS PCB, DigiKey p/n: ED1643-ND
KNOB - SWITCH KNOB RIBBED .551" PKG, DigiKey p/n: 450-1742-ND
MOV - VARISTOR 24V 250A DISC 7MM, DigiKey p/n: MOV-07D270K-ND
Q1 - MOSFET N-CH 60V 200MA TO-92, DigiKey p/n: 2N7000TACT-ND
R1, 2 - RES 1M OHM 1/4W 1% AXIAL, DigiKey p/n: 1.00MXBK-ND
R3, 4, 5, 6 - RES 2.21K OHM 1/4W 1% AXIAL, DigiKey p/n: 2.21KXBK-ND
R7 - RES 82K OHM 1/4W 1% AXIAL, DigiKey p/n: S85KCACT-ND
R8 - RES 39.2K OHM 1/4W 1% AXIAL, DigiKey p/n: 39.2KXBK-ND
R9, 10, 11 - RES 22K OHM 1/4W 1% AXIAL, DigiKey p/n: S22KCACT-ND
R12 - RES 69.8K OHM 1/4W 1% AXIAL, DigiKey p/n: 69.8KXBK-ND
R13, 14, 15, 16 - RES 100K OHM 1/4W 1% AXIAL, DigiKey p/n: 100KXBK-ND
R17 - POT 10K OHM 1/20W CARBON LINEAR, DigiKey p/n: PTV09A-4225F-B103-ND
SUPPLY - AC/DC WALL MOUNT ADAPTER 12V 12W, DigiKey p/n: 237-1455-ND
U1 - IC OPAMP AUDIO 15MHZ 8DIP, DigiKey p/n: LM833NGOS-ND
U2 - IC REG LDO 10V 0.1A TO92-3, DigiKey p/n: 296-1996-ND
U3 - IC AMP AUDIO PWR 7.5W AB TO263-9, DigiKey p/n: LM4950TSX/NOPBCT-ND
15016^3
by
2
layer board of
1.70x2.10
inches
(43.18x53.37
mm).
Shared on
July 20th, 2015 06:35.
CC01
36 Cell Solar Panel Powered.
6V Lead-Acid LT3652 Charger.
Power Sequence Control.
TS-2000 IF Buffer
by
AD0CZ.
2
layer board of
1.94x0.65
inches
(49.20x16.51
mm).
Shared on
July 19th, 2015 21:28.
Through hole version
B-15 bias V1.2
by
bax.
2
layer board of
1.50x1.50
inches
(38.13x38.13
mm).
Shared on
July 19th, 2015 15:03.
Bias circuit for Ampeg B-15N.