Wiring schematic for Ultrasonic Cleaner

[swertel]

I have an application where I need an ultrasonic cleaner. I did a vast search from many manufacturers and they have none that are small enough to be portable and fit within the equipment I need to clean. Thus, design my own.

I picked a power generator and converter/transducer from MasterSonic (MP Interconsulting).

http://www.mpi-ultrasonics.com/

The power supply will be the MSG.600.OF and the transducers will be MPI-C-40, 10 total. The contact person there has been helpful, but not forthcoming. I only have a basic understanding of electrical engineering so I'm not going to use my sole judgement as to the best design for the circuitry.

I was told that I need to wire the 10 transducers in parallel. No problem. I know what gage wire to use that will handle the load. I can deal with soldering and connectors without issue. But my original design was to use a 10-position terminal block to make the parallel connections. I was told that I'm making it too difficult and I should go get an ultrasonic cleaner, open it up, and see how it's wired. Wish I had one.
<continued next post>

--Scott

http://wertel.eng.pro

 

[swertel]

The generator has 3 wires for output: ground, high voltage (HV) and low voltage (LV).

The ground gets attached to the metal tank. Easy enough.

The transducers have two connections to them, an HV and LV. Thus, the HV from the generator goes to the HV of the transducer and likewise for the LV. Very simple from one transducer, but what is the easiest and cleanest method to wire the 10 of them in parallel.

As mentioned earlier, I was going to take the HV output of the generator into a terminal block. I was going to jumper each circuit and then have one lead out of each terminal go independantly to the transducer. Both for HV and LV meaning I'll need 2 10-position terminal blocks, plus 20 jumpers.

Perhaps I'm overcomplicating the issue. Can I just have one lead from the generator to the first transducer? And then at the connection to the transducer solder a second wire to the second transducer? And then from the 2nd to the 3rd, and down the line? But, the way I picture this is that they would end up in series, not parallel. Or am I picturing this wrong because I'm not actually going "through" the transducer if I make the connections at the input terminal as opposed to an input->output terminal and then onto the next transducer?

--Scott

http://wertel.eng.pro

 

[swertel]

Oh. And I forgot one more hitch.

After I shut the power off, the residual vibration works in reverse. Meaning, that rather than an electrical signal being converted into vibration by the transducer, the residual vibration is converted into an electrical charge. To dissipate the charge, I need to shunt the LV and HV leads together, for all 10 transducers. I'd like to have this happen automatically when the power to the generator is turned on and off. I know very little about relays or any other logic that will make that work - idiot proof.

I can read electrical schematics, so if you have a place to upload one I appreciate it. Otherwise email will work.
scott.wertel
at
auerprecision
dot
com

--Scott

http://wertel.eng.pro

 

[analogkid2digitalman]

How small of a cleaner do you need?

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"It's the questions that drive us"
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[MacGyverS2000]

A DP switch would solve the charge bleed-off issue, assuming you can get away with a delay of a few tens of ms... when it's turned to off the second pole connects a resistor/inductor across the transducers.

Dan - Owner

http://www.Hi-TecDesigns.com

 

[swertel]

Dimensions for the cleaner are 2" high, 14" long, and 4" wide.

--Scott

http://wertel.eng.pro