Homemade magnetic amplifiers made from common materials.

[theENERGYDREAM]

Would you try to replicate the Floyd Sweet VTA ? Thank You.

[grazianoturbogas]

GRATE !

[MucusFelidae]

Not magnetic amplifier, actually correct "magnetic attenuator"

[abcas1990]

@MucusFelidae maybe even a voltage divider .. lol

[stripes5150]

sounds like a french horn

[Nabo00o]

Great video and demonstration!

[Ibringthetruth1]

could be used in arc welder from microwave transformers to control amps.

[MucusFelidae]

@Ibringthetruth1 could be used in ..

Has been used for centuries...

[knowledgemonger]

I did something very like your light bulb experiment some years back. You can improve the operation a little by putting a capacitor across the control point. The transformers make different voltage waveforms when they are saturating. The capacitor shorts out the harmonics instead of having then go to the control circuit.

[chungsan1]

How can I replicate your set up ?

[knowledgemonger]

@chungsan1 You need to find a source of transformers that are nearly identical. 120V to 12V transformers will do. You also need a meter with an AC scale.

1 transformer that is not matched is just used to make 12V AC from 120V AC

The wiring of the 12V AC makes a loop. Xformer #1, Xformer #2, Xformer #3, Lightbulb back to Xformer #1. Any current that flows must go around the loop through all 3 parts.

You wire the 120V side of transformer #2 and #3 in series opposing.

[smeezekitty]

How does the crystal set drive a speaker in the first place??

[knowledgemonger]

@smeezekitty If you have a strong station nearby, a crystal set can drive a speaker. You often need to put a transformer in the path to work as a voltage step down and current step up. Crystal sets tend to make lots of voltage but little current. With a transformer, you can trade off one for the other.

[5150DamianDonahue]

i would so buy that off of you

[pfun41]

whats the point?

[multivoltage]

yessss is very beautiful.

[Thetruthishere11]

exactly what i was looking for!

[smokyatgroups]

It'd be interesting to see the 120V input current monitored during vs load variation. Great vid thanks for posting!

[Flapjackbatter]

You make the nicest things Mr S !

[nylesteiner]

@antienjigglement

That is correct. You have a good

understanding of this circuit. Shure would

have enjoyed talking to your navy electron-

ics man.

[blackcorvo]

what would be the input sensibillity of this audio amplifier?

[prototype9000]

i finally git it working but not to the effect that yours does i dont get it

[prototype9000]

never mind found one of the transformers is dead but do they need to be phased for that to work correctly

[prototype9000]

yeah id id it exactly like you except with diodes but when i put the ac on teh centertap between the 2 transformers i get nothing but when i put it on the outside wires then it works as it would with regular ac but the center tap nothing it dosent do a thing well like the diagrams on your website do the transformers need to be phased i phased them but same thing you know i dont know if you could help me that would be appreciated

[prototype9000]

when the transformers are out of phase is it just not going to do anyhting? i tried making it but the transformers allways only seem to work on one side if i switch the taps then the transformer will work on the other side

[bonecrime]

Very interesting!

[clerlic]

Pretty neat!