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Valve Signal Generator
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Return to top of page · Post #: 31 · Written at 11:10:23 PM on 26 January 2017.
	GTC Location: Sydney, NSW Member since 28 January 2011 Member #: 823 Postcount: 6686
what is a " Y Cap " http://www.kemet.com/Lists/Filestore/EvoxRifaRFIandSMD.pdf

Return to top of page · Post #: 32 · Written at 6:30:20 PM on 9 April 2017.
	Tallar Carl Location: Latham, ACT Member since 21 February 2015 Member #: 1705 Postcount: 2154
Hi people I have sent some photos in of mine . I have a few questions . One of the caps across the active has blown apart I believe . Am I correct in putting the new one from active to earth as I can't see any hint of where it may go. My next question is about the double 10μF Cap with the .100μF bypassing it. Are both the 10μF s negative to ground?. I ask this because one end of it has the two connections but one of them is red.

Return to top of page · Post #: 33 · Written at 8:36:12 PM on 10 April 2017.
	Brad Administrator Location: Naremburn, NSW Member since 15 November 2005 Member #: 1 Postcount: 7300
Photos uploaded to Post 32. ‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾ A valve a day keeps the transistor away...

Return to top of page · Post #: 34 · Written at 7:07:48 AM on 12 April 2017.
	Tallar Carl Location: Latham, ACT Member since 21 February 2015 Member #: 1705 Postcount: 2154
This one is the model before the one discussed here. Sorry I just realised that.

Return to top of page · Post #: 35 · Written at 8:48:21 PM on 13 May 2017.
	Marcc Location: Wangaratta, VIC Member since 21 February 2009 Member #: 438 Postcount: 5254
There are two different manufactures of "Leader" LSG 11 and those, in this last set of photo's are oil filled caps. The ones in the one I have here, surplus to requirements, (serviced with new valves) were them: Tested they failed leakage, get rid of them. Those mains caps are not critical to its operation but will get rid of RF, which I have plenty of, riding on the mains. Normally I put a 0.1mfd Broadside N to A and one of not more than 0.01mfd Active to Earth, with three wire cable fitted. RG5236, RG5230 Are some Jaycar line caps (AC mains Caps) Typically these have voltage 275~; 275VAC and several standards association stamps on them like "UL". Accuracy and band spread were an issue in some units like it. I calibrate with a counter (tone / modulation must be off). There are some cheap counter modules around. LSG-11 has a blocking / signal reducing cap in the output, which the clone I have, has not. Most of those output via the cathode, which keeps the voltage down. With the one I have you can use the crystal to zero beat against to get a frequency like 455HHz spot on.

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