Category: Stopped/Failed projects

Tube Amp – Update

Component layout:

opstelling

The connections:
opstelling

Mains switch, Power connector, 2 speaker connectors, RCA connector

 

Volume knob:
volumeknop
The power transformers.
transfos

The left transformer provides 200VAC. The right transformer provides 15VAC glow voltage.

CNC drill/mill machine V2 – Mechanical Part – Update

I have had a bearing holder for my Z-axis made (I cant drill such large holes here at home):
z-as
lagerhouder
Thanks Jaak!

 

I went to a metal store to buy a piece of aluminum bar (30*10*2000mm). I used this bar to attach the Z-axis to the X-axis. Therefore I also gotten a aluminum plate.
aluplaat

I’m also thinking how I’m going to build the X-axis. I think it is best that I make a metal frame with the guide rails mounted to it. Here is a drawing of what the frame is going to look like:
tekening x-as

CNC drill/mill machine V2 – Mechanical Part – Update

Today me and my dad made a part of the X-axis construction from steel square pipe.

x-as
Better pictures will follow when I get the bearings ready.

I made some drawings of a table where the cnc will be on.tafel
tafel

Today me and my dad made a part of the X-axis construction from steel square pipe.

x-as
Better pictures will follow when I get the bearings ready.

I made some drawings of a table where the cnc will be on.tafel
tafel

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

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