What the poster is saying is that the voltage regulator at the bottom left of the circuit labelled RG2 should be a negative five volt reg.
The power connections to IC2 seem to be missing some details.
Q2 ?
Also found this note which seems to refer to circuit and coils.
![](http://www.thunting.com/smf/Themes/default/images/solu.gif) | ![](http://www.thunting.com/smf/Themes/default/images/solust.gif) | Quote: | ![](http://www.thunting.com/smf/Themes/default/images/sagust.gif) | ![](http://www.thunting.com/smf/Themes/default/images/solust.gif) | Posted by {author} | ![](http://www.thunting.com/smf/Themes/default/images/sagust.gif) | | ![](http://www.thunting.com/smf/Themes/default/sagu.gif) |
![](http://www.thunting.com/smf/Themes/default/images/sol.gif) | surf pi pro midified for to increase power signal. rx coil is around 100 turns 0,5 mms in 7 cms diameter. cx coil is inverse to rx direction. 26 turns. tx coil 20 turns in 20 cms diameter coil and 0,5 mms
| ![](http://www.thunting.com/smf/Themes/default/images/sag.gif) |
![](http://www.thunting.com/smf/Themes/default/images/sola.gif) | | ![](http://www.thunting.com/smf/Themes/default/images/saga.gif) |
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http://www.thunting.com/smf/index.php/topic,61053.msg302846.html#msg302846
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« Last Edit: October 27, 2015, 11:48:44 pm by 6666 »
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