DIY Ultrasonic bath?

[Nick]

http://www.allendale-ultrasonics.co.uk/u...acity.html

That's actually a re-badged Eumax unit with a different tag (white-labelled) - http://www.eumax-cleaner.com/en/pro_show.asp?id=27 - same make as mine, but different model - lower volume & power - Eumax make a huge range of small units.

Good units - made to a not-too-tight budget - steel is reasonably thick and they are very noisy (as you would expect) - I run mine in the utility room as anywhere else in the house it gets really irritating....

I have had several of these over the years - one problem that occasionally besets them is the sticky pads that they used to use to hold the PCB(s) to the chassis - these were replaced in later models by screw-fixed pillars.

My "stick-on-keypad" (the front panel) failed after about 4 years and was not repairable, but a new one from the European importer in Germany was only 22euros delivered.

Most of the electronics is user-serviceable, except the control PCB which is uP-based and would need a replacement if anything too serious happened to it (unlikely).

The driver PCB handles the mains input, heater switching and the driver for one 50W transducer; a smaller & simpler slave board is used for each subsequent transducer.

My summary of these units and what to use in them (plus some example photos) is at http://golbornevintageradio.org/forum/sh...5#pid28945