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</head><body style=""><div>Good to hear that you solved it!</div>
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<div>Best regards</div>
<div>Simon</div>
<div><br>> Op 10 januari 2016 om 22:25 schreef jpdesroc <jpdesroc@oricom.ca>:<br>> <br>> <br>> After tweaking everything around my project<br>> I finaly found it was a very badly shielded output cable<br>> that would amplify the switching clicks !!!!<br>> The shield of that cable was greyed out and it was hard<br>> to retain any solder on it..<br>> Using a good shielded cable at the output cured the click/pop problem.<br>> Now the switch pop's are normal and acceptable.<br>> <br>> <br>> -------- Message original --------<br>> <br>> Maybe this could be a better choice:<br>> <br>> http://www.digikey.ca/product-detail/en/HE721C1200/HE114-ND/133225 [1]<br>> <br>> ?????<br>> <br>> --------------------------------------------------------------------------------<br>> <br>> -------- Message original --------<br>> <br>> OBJET:<br>> Dry/Wet effect relay that makes 'click' noise on changes...<br>> <br>> DATE:<br>> 2016-01-09 20:17<br>> <br>> DE:<br>> jpdesroc <jpdesroc@oricom.ca><br>> <br>> À:<br>> Synth-diy@dropmix.xs4all.nl<br>> <br>> Hi everybody,<br>> <br>> I just finished my DIY Hammond Vibrato/Chorus effect for guitar this <br>> week<br>> and am pretty happy with the final effect it gives to my old <br>> stratocaster.<br>> 3 vibrato, 3 chorus effects, very impressive !<br>> BUT I'm facing a last problem on this project..<br>> It uses a PANASONIC JQ1P-12 SPDT relay (K1) to switch<br>> the signal from clean to effect, but every time I switch<br>> the relay to change its state a big 'click' is heard in the audio <br>> output.<br>> I used that relay because I had some on hand to be used.<br>> I checked for any DC voltage on all of its contacts but there are not.<br>> All the contacts are at zero volt stable.. no DC.<br>> I noticed at the scope that its contacts are bouncing a lot on all state <br>> changes<br>> and that is what makes that noise.<br>> Maybe its because this type of relay is rated @ 10amp on its contacts.<br>> A too big coil 'snap' on the contacts ?<br>> I'm considering to change the type of relay for a quieter one.<br>> Maybe a small reed relay would do instead..<br>> Please have a look at the following schematic where the relay is used:<br>> <br>> http://www.arcenson.com/public/Hammond_scanner_main_board_schematic.pdf <br>> [2] [1 [2]]<br>> <br>> This is part of the overall project.<br>> I need your suggestion on a good silent SPDT relay working at 12VDC.<br>> Thanks.<br>> <br>> Links:<br>> ------<br>> [1] <br>> http://www.arcenson.com/public/Hammond_scanner_main_board_schematic.pdf <br>> [2]<br>> <br>> <br>> <br>> Links:<br>> ------<br>> [1] http://www.digikey.ca/product-detail/en/HE721C1200/HE114-ND/133225<br>> [2] <br>> http://www.arcenson.com/public/Hammond_scanner_main_board_schematic.pdf<br>> _______________________________________________<br>> Synth-diy mailing list<br>> Synth-diy@dropmix.xs4all.nl<br>> http://dropmix.xs4all.nl/mailman/listinfo/synth-diy</div></body></html>