📰 Source: upgoat.net | Upgoat

✍️ Original author: oyveyo

⬆️ score: 16

v/WhitePeopleThings · by u/oyveyo

📝 Original content:

I was typing this reply to @Oz5711 and it grew too large for reply containment.

Take the back off an old monochrome CRT video monitor or TV. Unplug or cut the 4-wire deflection yoke harness going from the motherboard to the neck of the display tube just forward of the electron gun. Connect your HiFi stereo’s left output channel in series with the vertical deflection coil and your speaker. Right channel in series with the horizontal deflection coil and the other speaker. You’ll suffer a slight attenuation of the higher band frequencies, but you can compensate via tonal adjustment. Power up the CRT and note the extremely bright spot at the center of the display. You can let it cook off the pigment or adjust the flyback transformer bias until the spot disappears, then dial it back up for a bright (but not insane) point. Put Dark Side Of The Moon on the phonograph and push approximately 30 watts RMS through your new rig. You will observe what you have created is a dual-axis audio-sourced oscilliscope.

But wait, there’s more. Make necessary runtime bias adjustment on the flyback transformer bias for optimal sweep brightness at a 50% duty cycle. Re-assemble the case of the monitor/TV and roll the thing over to rest on it’s back. The “front” of the thing should be facing the ceiling. Grab a spaghetti strainer, ideally one that roughly fits the area of the CRT nicely. Put strainer over the screen to make a dome of holes which will make beams of light. As the spot on the screen moves around, the vector through each hole changes.

Black out the room, switch off the lights. Look up. A galaxy of stars, dancing around in perfectly synchronized fashion to the tune you desire.

This is what it’s like to be a White man.

(note that the X-ray emission rating of the CRT will not apply after modification. DANGER: Lethal High Voltage. Do not attempt unless you are a qualified technician. Risk of implosion with projectiles. Voids warranty.)

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