Mechanical Music Digest  Archives
You Are Not Logged In Login/Get New Account
Please Log In. Accounts are free!
Logged In users are granted additional features including a more current version of the Archives and a simplified process for submitting articles.
Home Archives Calendar Gallery Store Links Info
MMD > Archives > March 2002 > 2002.03.07 > 04Prev  Next


Solenoid Protection
By Phil Dayson

In previous postings I have described a MIDI-controlled solenoid
operated harpsichord.  I have run into a problem and am looking for
some advice.  The solenoids (from QRS) draw about one ampere.  They are
controlled by one of John Wale's MIDI units through a homemade driver
board.

Recently one of the solenoids burnt out and in the process went short
circuit.  This in turn caused a huge current in the driver which
subsequently charred and sent a plume of smoke into the air.

I know that the commercial solenoid pianos have protection circuits.
Are there any suggestions on how to prevent this from occurring again?
I guess I could put a fuse in-line with each solenoid but I would hope
there is a better solution.

Regards to all
Phil Dayson
Vancouver Canada


(Message sent Thu 7 Mar 2002, 04:03:05 GMT, from time zone GMT-0800.)

Key Words in Subject:  Protection, Solenoid

Home    Archives    Calendar    Gallery    Store    Links    Info   


Enter text below to search the MMD Website with Google



CONTACT FORM: Click HERE to write to the editor, or to post a message about Mechanical Musical Instruments to the MMD

Unless otherwise noted, all opinions are those of the individual authors and may not represent those of the editors. Compilation copyright 1995-2024 by Jody Kravitz.

Please read our Republication Policy before copying information from or creating links to this web site.

Click HERE to contact the webmaster regarding problems with the website.

Please support publication of the MMD by donating online

Please Support Publication of the MMD with your Generous Donation

Pay via PayPal

No PayPal account required

                                     
Translate This Page