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History of Soft-start-version2


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Wed, 08 Dec 2004 07:00:08 . . . . (Maxhawk)?


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Soft switch version 2 anyone?

After the first group buy of the soft switch circuit, I continued to get emails from people interested in the kit. I've made a version 2 which includes the following improvements:

1. Replace the hard-to-obtain MAX6816 (debounce IC) with a CD4013.
2. Added a high current relay to switch up to 15A AC.
3. Added jumpers to make one board work with 115VAC and 230VAC.
4. Added an NTC thermistor for in-rush current limiting. The layout supports the popular CL-60 or larger CL-101 part.
5. Added a fuse (15A max) for the switched output.
6. Added an output for an optional current-limiting board.

You can find more info and pictures on my website: https://www.robcheng.com

Click on AUDIO -> ELECTRONICS -> SOFT SWITCH V2

Here is preliminary pricing (US $):

$55 shipped (U.S.) includes everything.
$40 shipped (U.S.) minus the switch.
$15 shipped (U.S.) for PCB only.

International: add ~ $5-$10 depending on location.

The prices are higher than the previous GB because I'm including the transformer and high-current relay.

|| Name ||Kit no switch||Kit with switch||Opt soft start||Location||
||DW8083|| 0 || 2 to 4 || 0 || USA ||
|| Brian Bell || || || || USA ||
|| Vladimir || || || || ||
|| Chuck || || || || ||
|| DaveN? || || || || ||
|| || || || || ||
|| || || || || ||
|| || || || || ||
|| || || || || ||
|| || || || || ||
|| || || || || ||
|| Totals || 0 || 4 || 0 || -- ||