License

Public Domain

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Pre amplifier with 2 transistors

1 month ago 38
  • Description
  • Documents
  • BOM
  • Attachments
  • Members
  • Comments

Description

Suddenly you got that nano mp3 player and decided to connect it to an amplifier but ...... it sounded not so good.. some distortions blah blah blah.

What you need is a good PRE AMPLIFIER! Yes!

A preamplifier will pick up the weak sound and raise it to a level such that your amplifier can work efficiently.

Lets do it? :-)

Documents

Sheet_1

PRE_AMPLIFIER_BOARD-01

BOM

ID Name Designator Footprint Quantity Manufacturer Part Manufacturer Supplier Supplier Part Price LCSC Assembly Mounted BOM_Supplier BOM_Manufacturer BOM_Manufacturer Part BOM_Supplier Part
1 Audio_in IN AUDIO-PJ320 1 LCSC BOOMELE Black headphone jack C18166
2 pws 5V DC-003A 3.5JACKS 1 LCSC BOOMELE DCConnector/DC-003A 3.5Jacks C81928
3 both-channel-out OUT AUDIO-PJ320 1 LCSC BOOMELE Black headphone jack C18166
4 left_channel L-OUT SIP-0.325INCH-2P 1 LCSC TE Connectivity 5-1437648-7 C306201
5 right-channel R-OUT SIP-0.325INCH-2P 1 LCSC TE Connectivity 5-1437648-7 C306201
6 2N3904 Q1-2N3904,Q2-2N3904 TO-92 2 LCSC Unisonic Tech 2N3904G-T92-B C258453
7 10k R1,R3,R4,R6 AXIAL-0.3 4
8 100k R2,R5 AXIAL-0.3 2
9 0.1uF C1,C2,C3,C4 CAP-CT4G-0805-2.54MM 4 LCSC Dersonic CC1H104ZA1FD3F5P10MF C254089
10 IN_left_channel L_IN SIP-0.325INCH-2P 1 LCSC TE Connectivity 5-1437648-7 C306201
11 In_right-channel R_IN SIP-0.325INCH-2P 1 LCSC TE Connectivity 5-1437648-7 C306201
12 10K LEFT,RIGHT RK097111080J 2 LCSC ALPS RK097111080J C97444
13 100nF C5,C7 CAP-CT4G-0805-5.08MM 2 LCSC Dersonic CC1H104ZC1PD3F5P30MF C254069
14 10uF C6,C8 CAP-D5.0XF2.0 2 LCSC ValuePro 10uF 16V 5*11 C43799

Attachments

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Members

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Comments (2)

UserSupport Reply

Nice work! ....

arsacd Reply

@UserSupport Thank you  :-)

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