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FS: LM555 time delays for tube amps and assorted surplus boards.
FS: LM555 time delays for tube amps and assorted surplus boards.
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Old 21st September 2019, 04:03 PM   #1
v4lve lover is offline v4lve lover  Netherlands
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Join Date: Aug 2010
Location: Surrounded by glass, no really my room is full of tubes
FS: LM555 time delays for tube amps and assorted surplus boards.
Default FS: LM555 time delays for tube amps and assorted surplus boards.

I ordered about 20 Pcb's for a LM555 based turn on delay, more then i ever need.

So i am selling the PCB's with a BOM and Schematic included. Or alternatively built and tested boards.



Function

The boards can be powered from 6.3VAC, once 6.3VAC is applied the relay will close in about 30-40seconds (trim-able with an on board trim-pot)



There is a footprint for a second relay, So you can switch dual mono supplies with this boards, i can supply a second relay.



The relay will switch 300VDC 440VAC and is rated for 15A.


The boards measure 49x100mm and have M3 mounting holes on 40x90mm
Connections are made through industry standard 6.3mm Fastons.



Attached you will find a schematic of the board.


Assembled and tested boards: 15. and a single PCB for 2.50



Shipping: EU only, for international DIY'ers you can ask me for the Gerbers. and i will send them to you for 1
Attached Images
File Type: jpg photo_2019-09-21_17-36-47.jpg (144.2 KB, 211 views)
File Type: jpg photo_2019-09-21_17-37-08.jpg (132.8 KB, 216 views)
File Type: png schema.png (25.7 KB, 212 views)
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Old 21st September 2019, 07:48 PM   #2
v4lve lover is offline v4lve lover  Netherlands
diyAudio Member
 
Join Date: Aug 2010
Location: Surrounded by glass, no really my room is full of tubes
FS: LM555 time delays for tube amps and assorted surplus boards.
Default Surplus experimental boards.

These are universal boards that can be used to quickly build a supply, you can either build a stacked capacitor supply, or a split supply, with full-wave or bridge rectification. Filtering options are CLCLC CRCRC or a combination of both, You can choose using 10mm wire jumpers.



Capacitors are standard 30mm snap-in types. Diodes are TO220, bleeder resistors are 15mm pitch types. Connections are made through wirepads.



These PCB's have some cosmetic errors included, but at 2 each that shouldn't matter that much.


Gerbers are free if you ask for them.
Attached Images
File Type: jpg photo_2019-09-21_21-39-33.jpg (153.9 KB, 191 views)
File Type: jpg photo_2019-09-21_21-39-49.jpg (120.4 KB, 182 views)
File Type: png Universal board schematics..PNG (34.0 KB, 57 views)
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Old 21st September 2019, 07:52 PM   #3
v4lve lover is offline v4lve lover  Netherlands
diyAudio Member
 
Join Date: Aug 2010
Location: Surrounded by glass, no really my room is full of tubes
FS: LM555 time delays for tube amps and assorted surplus boards.
Default Boards for mounting 35mm Dia snap-In capacitors

These are so simple, yet very useful, If you have trouble mounting electrolytics.


Size is 49x100mm, mounting holes M3 on 40x90mm.



Asking 1 for a PCB. Gerbers are, free if you ask for them.
Attached Images
File Type: jpg photo_2019-09-21_21-39-22.jpg (140.9 KB, 59 views)
File Type: jpg photo_2019-09-21_21-40-00.jpg (129.8 KB, 39 views)
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Old 22nd September 2019, 05:53 PM   #4
v4lve lover is offline v4lve lover  Netherlands
diyAudio Member
 
Join Date: Aug 2010
Location: Surrounded by glass, no really my room is full of tubes
FS: LM555 time delays for tube amps and assorted surplus boards.
Default Multi cap boards

These boards can be used with tektronix iron from 500 series O'scopes. Or you can choose not to put them in series and use the boards for bipolar supplies, Leaving one section unused.

The setup is really simple, Fuse holder and a resistor to fix the conduction angle on those low resistance windings. Then a capacitor and a bleeder resistor.


€2 each, Gerber files are free on request
Attached Images
File Type: jpg photo_2019-09-22_19-50-17.jpg (211.6 KB, 36 views)
File Type: jpg photo_2019-09-22_19-50-07.jpg (166.1 KB, 36 views)

Last edited by v4lve lover; 22nd September 2019 at 05:58 PM.
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Old 23rd September 2019, 03:00 PM   #5
v4lve lover is offline v4lve lover  Netherlands
diyAudio Member
 
Join Date: Aug 2010
Location: Surrounded by glass, no really my room is full of tubes
FS: LM555 time delays for tube amps and assorted surplus boards.
Default Boards for LM317/lm338 supply

These are boards for a LM317/LM338 (or pin compatible) supply. I use these as DC regulators for the heaters in my Phono amp.

The heatsink is a FISCHER SK125-84. 5.8K/W i believe
Great boards if you have height restrictions on your design
Bridge is a GBPC80X type rectifier, main filter capacitors are 7.5/18mm types.

The boards measure 80x100mm and are priced at €1.50 each. I have 6 available.
Attached Images
File Type: jpg IMG_1566.jpg (435.6 KB, 37 views)
File Type: png Regulator Schematic.png (28.7 KB, 38 views)

Last edited by v4lve lover; 23rd September 2019 at 03:02 PM.
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Old 26th September 2019, 08:07 PM   #6
conus is offline conus  Canada
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Join Date: Oct 2007
Location: Ontario
Would you sip to Canada?
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Old 27th September 2019, 10:53 AM   #7
v4lve lover is offline v4lve lover  Netherlands
diyAudio Member
 
Join Date: Aug 2010
Location: Surrounded by glass, no really my room is full of tubes
FS: LM555 time delays for tube amps and assorted surplus boards.
Yes, However depending on what you want to purchase, it might be cheaper to order the boards from china yourself, I can write up a BOM on most of these PCB's upon request. Or supply reworked versions.


PM me for the details.
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Old 27th September 2019, 06:29 PM   #8
conus is offline conus  Canada
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Join Date: Oct 2007
Location: Ontario
How much shipping + 1 Assembled and tested board: €15
Shipping to Toronto Canada
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