Stijn Coenen

Most commented posts

  1. 3D Printer UV Curing Device — 6 comments
  2. Resistor Decade Box — 6 comments
  3. 12V 25A PowerSupply — 3 comments
  4. Dust extraction – Part 1: Valves — 3 comments
  5. IN-14 Nixie Clock — 2 comments

Author's posts

Symmetric Power Supply 0-70V @ 5A – Update

I got another order today. This time from Reichelt.

reichelt bestelling
-5 MJ2955 Transistors
-8 Relays 12V 10A
-8 resistors 0.1 Ohm 5W.
-Spacers to mount the pcb’s

Symmetric Power Supply 0-70V @ 5A – Update

I mounted the resistors and transistors on the heat sink:
koelplaat

And I made a switching pcb.
schakelprint
schakelprint

CNC drill/mill machine V2 – Electronics Part – Update

Today I made the motherboard pcb of the stepper driver.
Mobo stappenmotor sturing
Mobo stappenmotor sturing

Tube Amp – Update

I received 4 tube sockets from Pollin today. Now I can start building.
buisvoet

Tube Amp – Update

The amplifier is almost finished, but testing points out that I have a nasty 50Hz buzz on the output.
bijna klaar
bijna klaar

SC Analyser 2005

This is a project from Elektor April 2005 (Link).

I want to build this circuit because I have a big box of transistors etc. of witch the working is unknown (They are de-soldered). This circuit uses a PIC16F876, and coincidental that I have 2 off those.

sc analyser

AVR Programmer

Sometimes it is handy to have a avr programmer, so I don’t need to bother other people for it.

I first wanted a programmer to use on my serial port, but I couldn’t find one. Then I got a tip to build a programmer that works with the parallel port. I found this design on circuits online en decided to build it. http://www.circuitsonline.net/circuits/view/112

AVR-progger

CNC drill/mill machine V2 – Electronics Part – Update

I bought 4 inductive sensors from Omron for cheap.sensor

sensor

Thanks to Peter.

250W Subwoofer Amplifier

I’m building a 5.1 surround sound system. Therefore I need a subwoofer. This project is the amp for that subwoofer.

The circuit drawings that I want to use for this project can found here:
The amplifier: http://marcusgun.awardspace.com/m250.html
The subwoofer filter: http://www.circuitsonline.net/circuits/view/69

 

Today I mounted the heatsink on the enclosure:

Kast met koelprofiel

Kast met koelprofiel

CNC drill/mill machine V2 – Mechanical Part – Update

I finished a part of the Z-axis. Now I can mount it to the Y-axis. However it is not completely finished but I quit for today :p.

z-as
z-as
z-as
z-as