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 | -- |
