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Terrestrial Broadcasting
Terrestrial Television, Digital and Analogue
Switch Mode Power Supply Woes - New Aerial/Mast head amplifier.
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<blockquote data-quote="RustySpoons" data-source="post: 1057865" data-attributes="member: 412012"><p>So in the name of "Science" or is it curiosity? I opened it up and took some pictures.</p><p>There was a thin layer of some form of "potting" however that came out very easily.</p><p></p><p>Not much (If any) Primary side filtering, I.e. EMI/RFI X Capacitors etc.</p><p>Very simple SMPS design, I'm surprised they even through an opto-isolator in there.</p><p></p><p>Nothing on the AC side in terms of protection, no air gaps between the Live/Neutral for AC creepage nor between the primary and secondary.</p><p></p><p>And just love the way the F Type's are connected, that won't be 75ohm and not shielded as the centre connection is just flapping in the breeze, also "Screened" I don't think so...</p><p>[ATTACH=full]119521[/ATTACH]</p><p>[ATTACH=full]119522[/ATTACH]</p><p>[ATTACH=full]119523[/ATTACH]</p><p></p><p>[ATTACH=full]119525[/ATTACH]</p></blockquote><p></p>
[QUOTE="RustySpoons, post: 1057865, member: 412012"] So in the name of "Science" or is it curiosity? I opened it up and took some pictures. There was a thin layer of some form of "potting" however that came out very easily. Not much (If any) Primary side filtering, I.e. EMI/RFI X Capacitors etc. Very simple SMPS design, I'm surprised they even through an opto-isolator in there. Nothing on the AC side in terms of protection, no air gaps between the Live/Neutral for AC creepage nor between the primary and secondary. And just love the way the F Type's are connected, that won't be 75ohm and not shielded as the centre connection is just flapping in the breeze, also "Screened" I don't think so... [ATTACH=full]119521[/ATTACH] [ATTACH=full]119522[/ATTACH] [ATTACH=full]119523[/ATTACH] [ATTACH=full]119525[/ATTACH] [/QUOTE]
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Terrestrial Broadcasting
Terrestrial Television, Digital and Analogue
Switch Mode Power Supply Woes - New Aerial/Mast head amplifier.
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