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| To: | [email protected] |
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| Subject: | Re: AW: LF: RE: Re: VLF_8.79 kHz |
| From: | "Roelof Bakker" <[email protected]> |
| Date: | Thu, 25 Feb 2010 13:57:02 -0000 |
| In-reply-to: | <[email protected]> |
| References: | <[email protected]> <38A51B74B884D74083D7950AD0DD85E82A1B1A@File-Server-HST.hst.e-technik.tu-darmstadt.de> <op.u8omd2vbyzqh0k@pc1> <[email protected]> |
| Reply-to: | [email protected] |
| Sender: | [email protected] |
| User-agent: | Opera Mail/9.63 (Win32) |
Hello Andy, The equivelent length is 30 cm, representing about 2-3 pF. The buffer amp is using a J310 with a 1.5 M gate resistor. Using bootstrap techniques, one can achieve a very low input capacitance.However this results in even more signal and noise output, especially at VLF. So it is not used here. 73, Roelof |
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