Apocalypto you are correct !! I found some errors with resistors and diodes . Big mess !!!!
The schematic is Good but the parts Lay-out is very wrong . I was told everything is correct
someone who sent me files is
DO NOT MAKE A DELTA PCB circuit board Till we fix it !!!............
I have a little work to do now . Thank-You for posting this before we make a circuit board !!
Eugene
The 680 ohm resistor [R6] below the IRF 740 should be 1k ohm resistor . Also on the component layout they are using a 2.2 k ohm damping resistor which is high , the 680 ohm damping resistor on the schematic seems more realistic . They did not use R51 , the purpose of R51 is to reduce current on the IRF 740 if your seach coils DC resistance is less than 2.0 ohms , I see it on the schematic but it is missing on the PCB component Lay-Out , That is why they put the two blue jumpers from IRF740 to the -12 supply . The ST TH1220 is not being used but must be added . So what I am seeing now are just little problems . I need to continue and check the whole circuit .
Eugene
Linkback: You are not allowed to view links.
Please Register or Login
http://www.thunting.com/smf/index.php/topic,9243.msg58214.html#msg58214
|
|
Logged
|
Let's Talk Treasure right here on Thunting.com
|
