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<blockquote data-quote="Reg" data-source="post: 100863" data-attributes="member: 3659"><p>The question of regulators appears to be confusing so I will try to explain a little more about the TDI (and SL series)and how it works. First, there is no regulator on the main voltage power supply. So, if 16V is used, that voltage is applied to the FET and associated circuitry on the TDI and also to the audio on the SL. On the TDI, there is a 10V regulator for the audio.</p><p></p><p>There is a +5 and -5V regulators for the power supplies and a separate -5V for the microprocessor. </p><p></p><p>The +5V is created so there isn't a whole lot of extra current available. I mention this in case someone has some ideas of adding a lot of circuitry.</p><p></p><p>There is a schematic of the GS 5 on the Geotech1 forum and the TDI circuitry is quite similar. The original 200 TDI's were almost a duplicate of this circuitry. For those wanting to look at the GS 5 circuit, do a search for GS V or Goldscan 5 on the Geotech forum. Search down though the lists for the GS5 pdf.</p><p></p><p>Reg</p></blockquote><p></p>
[QUOTE="Reg, post: 100863, member: 3659"] The question of regulators appears to be confusing so I will try to explain a little more about the TDI (and SL series)and how it works. First, there is no regulator on the main voltage power supply. So, if 16V is used, that voltage is applied to the FET and associated circuitry on the TDI and also to the audio on the SL. On the TDI, there is a 10V regulator for the audio. There is a +5 and -5V regulators for the power supplies and a separate -5V for the microprocessor. The +5V is created so there isn't a whole lot of extra current available. I mention this in case someone has some ideas of adding a lot of circuitry. There is a schematic of the GS 5 on the Geotech1 forum and the TDI circuitry is quite similar. The original 200 TDI's were almost a duplicate of this circuitry. For those wanting to look at the GS 5 circuit, do a search for GS V or Goldscan 5 on the Geotech forum. Search down though the lists for the GS5 pdf. Reg [/QUOTE]
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Metal Detectors
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Whites TDI Pro, let the testing begin.
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