Search found 26 matches

by Lauri
Sun Mar 23, 2025 12:35 pm
Forum: Guitar amps
Topic: Stereo vibrato guitar amp project
Replies: 1
Views: 18398

Re: Stereo vibrato guitar amp project

dualvibratoinside.jpg
dualvibratofront.jpg
by Lauri
Sat Mar 22, 2025 8:54 am
Forum: Gerber & MacGruber
Topic: 4 Channel mic pre
Replies: 1
Views: 47059

Gerbers

Gerber files
micpre4-265mmx130mm.zip
(539.95 KiB) Downloaded 15 times
clipindicator-131mmx22mm.zip
(89.45 KiB) Downloaded 19 times
by Lauri
Sun Mar 16, 2025 9:35 am
Forum: Gerber & MacGruber
Topic: XLR Input / Output bypass PCB with buffers for VU meters
Replies: 0
Views: 5327

XLR Input / Output bypass PCB with buffers for VU meters

Schematic:
inputoutputrele.pdf
(190.48 KiB) Downloaded 58 times
Gerber files:
inputoutput-215mmx50mm.zip
(116.28 KiB) Downloaded 58 times
by Lauri
Sat Mar 08, 2025 3:25 pm
Forum: Guitar amps
Topic: Stereo vibrato guitar amp project
Replies: 1
Views: 18398

Stereo vibrato guitar amp project

My latest guitar amp project is a stereo amp with vibrato and reverb. The amp is inspired from Gibson GA-83S where the vibrato circuit is based on Dorf Universal Vibrato .

Power amp is cathode biased with zener diodes limiting how much cathode voltage can rise. Either 6V6 or 6L6 tubes can be used ...
by Lauri
Sat Mar 08, 2025 1:00 pm
Forum: HiFi
Topic: Simple low power tube HiFI amp
Replies: 5
Views: 71787

Re: Simple low power tube HiFI amp

hifipcb2small.jpg
by Lauri
Wed Mar 05, 2025 11:41 am
Forum: Open Source PCB Design
Topic: KiCad PCB libraries
Replies: 4
Views: 56740

Re: KiCad PCB libraries

Updated version of noval socket that doesn't give any errors or warnigs with KiCad 9.0
belton_noval-bside.zip
(1.8 KiB) Downloaded 223 times
by Lauri
Sun Mar 02, 2025 10:26 am
Forum: Open Source PCB Design
Topic: KiCad PCB libraries
Replies: 4
Views: 56740

Re: KiCad PCB libraries

belton_noval-bside.zip
(901 Bytes) Downloaded 250 times
by Lauri
Sat Mar 01, 2025 2:24 pm
Forum: HiFi
Topic: Simple low power tube HiFI amp
Replies: 5
Views: 71787

Re: Simple low power tube HiFI amp

hifiel84valmis.jpg
hifiel84valmis.jpg (1009.1 KiB) Viewed 67704 times
by Lauri
Sat Mar 01, 2025 2:18 pm
Forum: HiFi
Topic: Simple low power tube HiFI amp
Replies: 5
Views: 71787

Re: Simple low power tube HiFI amp

Updated schematic and gerber files
hifisimple.pdf
(208.67 KiB) Downloaded 234 times
hifisimple-200mmx100mm-update1.zip
(228.62 KiB) Downloaded 132 times
by Lauri
Sat Mar 01, 2025 6:40 am
Forum: Gerber & MacGruber
Topic: Channel switcher PCB
Replies: 0
Views: 14048

Channel switcher PCB

Channel switcher using Arduino Nano Every.

Schematic
channelswitcherarduino.pdf
(147.82 KiB) Downloaded 202 times
Gerber files
channelswitcherarduino-53mmx64mm.zip
(54.73 KiB) Downloaded 179 times
Arduino sketches for amplifier and footswitch pedal
channelswitcher-arduino-sketches.zip
(2.66 KiB) Downloaded 183 times
How to wire the PCB
switcherhowtoconnect.pdf
(209.88 KiB) Downloaded 213 times