Comments on: Phantastron Kit Available http://www.deviantsynth.com/2008/10/02/phantastron-kit-available/ Analogue Heaven is poison. We are the antidote. XD Wed, 21 Jul 2010 09:49:57 +0000 http://wordpress.org/?v=2.9.2 hourly 1 By: LorinP http://www.deviantsynth.com/2008/10/02/phantastron-kit-available/comment-page-1/#comment-487 LorinP Mon, 06 Oct 2008 20:01:13 +0000 http://www.deviantsynth.com/?p=248#comment-487 Thank you indeed. Right now I am definitely into kits, as I feel that many people desire to get into tubes and other obscurities without committing to building from scratch. Having the power supply laid out with a PTC, fuse and no exposure to wall AC is nice for DIY beginners too. My teeth hurt when I think of the shocks I've gotten from making old heathkit power supplies when I was a kid... There's another website that explains the circuit fairly well: http://www.radarpages.co.uk/theory/ap3302/sec2/ch8/sec2ch8p137.htm I'll also post some scans of the textbooks I have that talk about miller circuits, sanatrons and phantastrons. I'll post some schematics, too , for the deviant community. There are some good schematics yet to post... There are a lot of modification possibilities with this topology, which is part of the reason I like the turret board kit. Adding a 6h6 diode or a silicon diode to the screen and control grid can further linearize the timebase functions, for instance. Or, reducing the resistance between plate and grid can make some crazy, cranky distortion. Thank you indeed. Right now I am definitely into kits, as I feel that many people desire to get into tubes and other obscurities without committing to building from scratch. Having the power supply laid out with a PTC, fuse and no exposure to wall AC is nice for DIY beginners too. My teeth hurt when I think of the shocks I’ve gotten from making old heathkit power supplies when I was a kid…

There’s another website that explains the circuit fairly well:
http://www.radarpages.co.uk/theory/ap3302/sec2/ch8/sec2ch8p137.htm

I’ll also post some scans of the textbooks I have that talk about miller circuits, sanatrons and phantastrons. I’ll post some schematics, too , for the deviant community. There are some good schematics yet to post…

There are a lot of modification possibilities with this topology, which is part of the reason I like the turret board kit. Adding a 6h6 diode or a silicon diode to the screen and control grid can further linearize the timebase functions, for instance. Or, reducing the resistance between plate and grid can make some crazy, cranky distortion.

]]> By: admin http://www.deviantsynth.com/2008/10/02/phantastron-kit-available/comment-page-1/#comment-486 admin Sat, 04 Oct 2008 22:01:53 +0000 http://www.deviantsynth.com/?p=248#comment-486 Very nice! Good work. You chose tubes that are still easy to find. A phantastron can be built with a long list of pentodes and pentagrid converters. It's such a simple circuit, but utterly obscure (no schematics on Google, and nothing in Wikipedia, for example). Here's the only schematic I've found online. He used the phantastron to generate horizontal sweep for a small oscilloscope. http://g4oep.atspace.com/toycro/toycro.htm Lorin, if you like later this year I could help you lay out a PC board for this circuit. Then you could (horrors) mass produce it. Mebbe mount it in a little cabinet with a 200mm control strip mounted on top. Very nice! Good work. You chose tubes that are still easy to find. A phantastron can be built with a long list of pentodes and pentagrid converters. It’s such a simple circuit, but utterly obscure (no schematics on Google, and nothing in Wikipedia, for example).

Here’s the only schematic I’ve found online. He used the phantastron to generate horizontal sweep for a small oscilloscope.
http://g4oep.atspace.com/toycro/toycro.htm

Lorin, if you like later this year I could help you lay out a PC board for this circuit. Then you could (horrors) mass produce it. Mebbe mount it in a little cabinet with a 200mm control strip mounted on top.

]]> By: BirdFLU http://www.deviantsynth.com/2008/10/02/phantastron-kit-available/comment-page-1/#comment-485 BirdFLU Sat, 04 Oct 2008 11:18:59 +0000 http://www.deviantsynth.com/?p=248#comment-485 Sometimes a goat needs a punchin'. Could you get a picture of your goat standing on top of a Phantastron? Construct a ribbon controller platform that the goat stands on to control a Phantastron. Sometimes a goat needs a punchin’.

Could you get a picture of your goat standing on top of a Phantastron?

Construct a ribbon controller platform that the goat stands on to control a Phantastron.

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