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DIY For Audio
DIY Precision fidelity C7A
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<blockquote data-quote="V4lve Lover" data-source="post: 1075971" data-attributes="member: 24540"><p>Made a start on the power supply, figured a tube regulator would produce too much heat. So solid state it is, but the supply should be brown-out proof which means active regulation is out of the window.</p><p></p><p></p><p>Heres the heater supply, L200 based so it has current limit.</p><p></p><p><img src="https://i.postimg.cc/nV6zmPSr/Heater-supply-schematic.png" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>Heres the HT supply, just a rectifier feeding into a CRC stage to get rid of the higher order harmonics, fed into a Gyrator stage (Poor mans CLC, fed into another solid state capacitor multiplier. The gyrator has current limit set at about 0.65V/8.2Ohms = 80mA Go to 6.8R metal oxide for approx 95mA current limit.</p><p></p><p><img src="https://i.postimg.cc/sxCkj7Kj/high-voltage-supply-schematic.png" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>Let me know what you think.</p></blockquote><p></p>
[QUOTE="V4lve Lover, post: 1075971, member: 24540"] Made a start on the power supply, figured a tube regulator would produce too much heat. So solid state it is, but the supply should be brown-out proof which means active regulation is out of the window. Heres the heater supply, L200 based so it has current limit. [IMG]https://i.postimg.cc/nV6zmPSr/Heater-supply-schematic.png[/IMG] Heres the HT supply, just a rectifier feeding into a CRC stage to get rid of the higher order harmonics, fed into a Gyrator stage (Poor mans CLC, fed into another solid state capacitor multiplier. The gyrator has current limit set at about 0.65V/8.2Ohms = 80mA Go to 6.8R metal oxide for approx 95mA current limit. [IMG]https://i.postimg.cc/sxCkj7Kj/high-voltage-supply-schematic.png[/IMG] Let me know what you think. [/QUOTE]
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DIY & Tutorials
DIY For Audio
DIY Precision fidelity C7A
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