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Trevor's Repair Café
A place to learn and discover analog electronics
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Forward voltage of various diodes
Measuring Inductance With an Oscilloscope
Microcap 12: Tips and Hints
In Defense Of The LM358
Emulating germanium diodes
Transistor Matching
Measuring Various BJT Beta (hFE)
Measuring JFET Idss and Vgs(off)
Transistor topologies and specifications
Device Teardowns
Keyboards
Excel-O-Tone
Bontempi BT 805 Keyboard
Bontempi 123765 Keyboard
Portable Electronic Keyboard
Cassette Recorders
Standard SR-T115 Cassette Recorder
Sanyo M-787AZ Cassette Recorder
DP Specials Karaoke Set Module
SWEEX 7.1 External USB Sound Card
AudioSonic CL-249 Alarm Clock Radio
Korg Micro Six (GT-6J) Tuner
Imatronic SX3000 Slide Dissolve Unit
CB-MASTER Netzgeraet 7/9A Power Supply
Vielfachmessgerät No. 62DEN Analog Multimeter
Unknown Dutch 70s Bench PSU
PCB
Kicad
Personal Footprint Library
KICAD 1: Buzzer Module
KICAD 2: RGB LED Module
KICAD 3: LM386 Amplifier With Bass Boost
KICAD 4: BJT Oscillator
KICAD 5: Beginners Tutorial (4.0.5)
LoRa Node PCB
Fixes and Repairs
Hardware
Nintendo DS Lite Black Screen
Trust GXT 28 Trigger Repair
Xbox 360 Wired Controller Repair
Behringer Eurorack UB802 Audio Mixer
Unknown Dutch 70s Bench PSU
Software
Need For Speed Porsche Unleashed Crashes
M-AUDIO Fast Track BSOD
Delivery Optimization hogging bandwidth
3D Printing
3D Printing Journal
3D Printing Tips
3D Models
Projects
Audio
Synthesizers
Lunetta
Lunetta: LM7805 Power Supply
Square FM
BPM Boy
12v Symmetrical Eurorack PSU
VCO 4069 Build Report
VCO-1: Low-Cost Voltage Controlled Oscillator
Envelope Follower / Attack Release (AR) Generator
Attenuverter With Gain And Offset
MOSFET Sample and Hold
White Noise Generator
Coloured Noise Generator
Effects Pedals
Distortion++
Tube heater Linear PSU (6.3V)
Big Devil (Vibrato)
Transient Snitcher (Boost + Clip Detection)
Trefuzz (Buffered Bass Fuzz)
Digitizerinator (Comparator Fuzz)
WTF Tube Distortion
Worst Tone Control V1.0
Humkiller V1.0
Automated Piano
From Schematic To Product (KiCad + FreeCAD)
Pancake Printer
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