coil generator : tester of coils

[6666]

OK KT315, request has been sent, lets see what you get

[6666]

thank you but... why you send me 6 euro if i paypalrequested 8? why always the fee just on my side if i asked do fee on your side?
amazing....
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Hello KT315 paypal is doing something strange, I went through the Australian website it showed me what you should receive in euro with the fees, it should have been the correct amount in your account, it appears that we see something different in our accounts ,
they should not be charging you a fee, I do not get charged a fee to receive money that is strange
I will pay you the extra amount you have not received and your fee.
Could you please send me another paypal request for the extra amount, thanks.

[moorejl57]

How do we pay the fee on our side so you get the full amount?. I rarely use PayPal and ran into this issue when I sent you money for the DP board.

[kt315]

Hi KT315 paypal sent

thank you but... why you send me 6 euro if i paypalrequested 8? why always the fee just on my side if i asked do fee on your side?
amazing....

[moorejl57]

It would be interesting to test this, I would imagine that a buffer would be needed in the output so not to load the circuit.

The link in post #132 includes a LTSpice file to test with. You can simulate a 10X probe (10M and 20pf in parallel) load and see what happens to the frequency.

[6666]

Another simple circuit to look at for coil resonance http://pyams.blogspot.com/2017/05/th...scillator.html

It would be interesting to test this, I would imagine that a buffer would be needed in the output so not to load the circuit.

[6666]

Hi KT315 paypal sent

[moorejl57]

A better explaination https://wiki.analog.com/university/c...-lab-peltz-osc

[moorejl57]

Another simple circuit to look at for coil resonance http://pyams.blogspot.com/2017/05/th...scillator.html

[kt315]

ok. do please payment. i will see.

thank you

[6666]

Thanks KT, I will buy one coil tester pcb and one op amp tester pcb, + postage , total cost seven euro
I will do the fee,
I will email you my address
thanks
cheers

Email sent, just transferring some funds into paypal

[6666]

hello 6666

i have whole batch. as i wrote if anyone buys dp or bara pcb the cost of the board is 2 euro.
i am selling it on ebay for 5USD and 3USD sending. buy op amp tester one and this board 2 euro + 2 euro
+3 euro for shipping if you want.

if you do fee from my side add 1euro to the cost.

my paypal [email protected]

thank you

Thanks KT, I will buy one coil tester pcb and one op amp tester pcb, + postage , total cost seven euro
I will do the fee,
I will email you my address
thanks
cheers

[kt315]

hello 6666

i have whole batch. as i wrote if anyone buys dp or bara pcb the cost of the board is 2 euro.
i am selling it on ebay for 5USD and 3USD sending. buy op amp tester one and this board 2 euro + 2 euro
+3 euro for shipping if you want.

if you do fee from my side add 1euro to the cost.

my paypal [email protected]

thank you

[6666]

Hello KT315, do you have any spare PCB's for this coil tester for sale ? thanks

[kt315]

Hello to all
I have some questions that I would like to thank for help


In general, there are two Rx coil coupling structures that are:


1) Parallel tank resonance circuit (TGSL and ELDORADO and RAPTOR devices)
2) series Tank resonance circuit (CIBOLA, TEGON and FORTUNE devices)
I've taken photos of these two different structures.


1) What is the difference between the two parallel and serial connection structures in the Rx VLF metal detector coil?
2) Why did TESORO's older machines use parallel tank structures, but used end-of-series tank resonance series?

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transfer this post here. looks people want to be in the darkness of the ignorance.