• The swap meet forum is for private non-commercial transactions. Only unmoderated members can post here.

    diyAudio provides this forum for the convenience of our members, but makes no warranty nor assumes any responsibility. We do not vet any members. Use of this facility is at your own risk. Customers can post any issues in those threads as long as it is done in a civil manner. All diyAudio rules about conduct apply and will be enforced.

Free to a good amplifier: ESPP soft start - probably working

Jump to Latest
ByronInPortland

ByronInPortland

Member
Joined 2010
#1
Elliott Sound Products Project 39, Rev A https://sound-au.com/project39.htm

I'm giving away everything shown in the photos:
  • front panel switch
  • 9V transformer (for 120VAC mains)
  • PCB standoffs seen in the photo
  • wires with quick disconnects and ring terminals.
Some caveats - why I'm not asking for payment:
  • It has a ripped-up trace which I jumpered (seen in photo)
  • I modified the original design by changing the values of R1 & C2 in an attempt to increase the delay.
  • C2 looks like it's bulging a bit at the top. Is it blown? I don't know.
  • I know it's working, in that - when I flip the switch I hear the relays click and I get power to the power supply transformer - but what is the delay? I don't know.
  • The relays failed once (after many years of use). Will they fail again? I don't know
Taker pays shipping from near Portland OR via PayPal. PM me if interested.
 

Attachments

  • DSC_0006.JPG
    DSC_0006.JPG
    172.2 KB · Views: 20
  • DSC_0007.JPG
    DSC_0007.JPG
    222.4 KB · Views: 19
  • DSC_0009.JPG
    DSC_0009.JPG
    188.6 KB · Views: 19
You must log in or register to reply here.
Top Bottom