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The Regular Stuff: Chat, Buy, Sell, Off Topic, etc. => General Discussion - Dynamos, Generators, Alternators, Magnetos... Scale Models, Toys, Originals, etc => Topic started by: Gearhead Jed on July 24, 2019, 05:37:14 pm

Title: Converted Jensen AC generator to have DC as well.
Post by: Gearhead Jed on July 24, 2019, 05:37:14 pm
Had some help with this one, but it works as AC and DC current generator.
https://youtu.be/qshJpSfPAFY
Title: Re: Converted Jensen AC generator to have DC as well.
Post by: St Paul Steam on July 24, 2019, 05:50:10 pm
excellent work Jed, that has so many good possibilities.
pretzel PA. has done it again 😉👍
(brilliant idea utilizing the phone charger)
Title: Re: Converted Jensen AC generator to have DC as well.
Post by: IndianaRog on July 24, 2019, 07:24:53 pm
Jed, now you have to explain HOW you pulled that off...  Also, can it produce AC as well or has it been converted to DC only.

I asks because I once tried hard to make a Jen 15 produce both AC and DC like on original Jensen 51's, but I failed to pull it off.

Never too old to learn how it's done.

Rog
Title: Re: Converted Jensen AC generator to have DC as well.
Post by: Gearhead Jed on July 24, 2019, 08:10:09 pm
Jed, now you have to explain HOW you pulled that off...  Also, can it produce AC as well or has it been converted to DC only.

I asks because I once tried hard to make a Jen 15 produce both AC and DC like on original Jensen 51's, but I failed to pull it off.

Never too old to learn how it's done.

Rog

Rog, it was mind numbing at first, but I had someone explain it to me simply that it all made sense. I don't have an electrical engineering degree, but I do understand how it works.

I have tested the generator on a #55 and it does produce AC and DC current. When I have a DC motor attached to the leads, it runs. When I touch the leads to the light post side and contact, which is the AC side, the motor will only pulse back and forth. This is how I truly knew that this was truly AC/DC. Not only that, but I can hook a 9v battery to the leads and it will run as a motor.  The light bulb knows no AC/DC current. Electricity only knows path of least resistance and the tungsten in the bulb is the resistance, so that's why it works. Why does a 2.47 volt bulb not burn out when hooked to a 9v DC charger? The windings in the armature create enough resistance to drop thw voltage and that is why it doesn't burn out.
Title: Re: Converted Jensen AC generator to have DC as well.
Post by: Gearhead Jed on July 24, 2019, 08:17:51 pm
I hooked my voltmeter and a Shurite gauge to the leads and it only produced more than 2v DC. It produced about the same volts on the AC side. Remember, AC bounces back and forth. DC goes in one direction like a battery.
Title: Re: Converted Jensen AC generator to have DC as well.
Post by: Nick on July 25, 2019, 01:28:32 am
Very cool Jed
Title: Re: Converted Jensen AC generator to have DC as well.
Post by: txlabman on July 25, 2019, 08:53:57 am
Nice work Jed.

Do you have a wiring diagram?
Title: Re: Converted Jensen AC generator to have DC as well.
Post by: jkbixby on July 25, 2019, 09:17:44 am
Wish I understood how it works but regardless I think it's pretty neat.
Title: Re: Converted Jensen AC generator to have DC as well.
Post by: classixs on July 25, 2019, 12:30:23 pm
Some serious modding there, well done Jed !
Title: Re: Converted Jensen AC generator to have DC as well.
Post by: crazydoug on July 25, 2019, 12:43:07 pm
Great idea Jed, i will have to try that !
crazydoug
Title: Re: Converted Jensen AC generator to have DC as well.
Post by: Jim on July 25, 2019, 06:37:07 pm
Nice work Jed.
Title: Re: Converted Jensen AC generator to have DC as well.
Post by: Gearhead Jed on July 25, 2019, 07:29:06 pm
Thanks all! I really wanted to try this and it works! I never understood how one generator can produce two currents, but it does!
Title: Re: Converted Jensen AC generator to have DC as well.
Post by: Swift Fox on July 26, 2019, 03:44:01 am
Nice work Jed, good to see it working well.
Title: Re: Converted Jensen AC generator to have DC as well.
Post by: RedRyder on July 31, 2019, 06:30:52 am
That is a great modification, Jed...!!!


Thanks for posting it here!



Gil