|
|
Post by George K on Mar 1, 2016 22:07:09 GMT -8
Hello
I am in the process of building a 1.6 kv 1amp power supply for my linear amplifier I got for cheap at a hamfest.
For the transformer I am planing on tying 4 110:220v 1000w each transformers in series giving me 1.6kv and just under an amp.
Any comments or suggestions?
|
|
|
|
Post by Gary Lecomte on Mar 2, 2016 7:38:15 GMT -8
I am confused?
How do you get 1600 Volts from that?
220 x 4 = 880
|
|
|
|
Post by retiredat55 on Mar 2, 2016 12:08:03 GMT -8
T1 110>220
|
T2 220>440
|
T3 440>880
|
T4 880>1760 ?
|
|
|
|
Post by Gary Lecomte on Mar 2, 2016 22:11:51 GMT -8
I Thought All these Transformers are Made for 110 to 220 VAC.
If So, You CAN'T DO IT THAT WAY!
|
|
|
|
Post by retiredat55 on Mar 3, 2016 0:49:07 GMT -8
Hi Gary,
Yes, it is not safe at all, I agree!
But I thought that maybe TS means this by putting them in series...
|
|
|
|
Post by Gary Lecomte on Mar 3, 2016 7:53:36 GMT -8
WHO or What is TS?
If In Series, the 110 Volt Primaries would be connected In Parallel to the 110 Volt power.
The 220 Volt Secondary's would be Series Connected.
The Output would be 4 Times 220 Volts, so 880 Volts.
|
|
|
|
Post by George K on Mar 3, 2016 11:18:48 GMT -8
Another crazy idea down the tubes. The amplifier has 4 AM transmitter tubes for output.
Maybe I could parallel 2 microwave transformers instead. !.6kv transformers are a fortune.
If I can find an old tv transformer should give me 400v into a a voltage and amperage doubler could be an option.
|
|
|
|
Post by Gary Lecomte on Mar 3, 2016 11:44:28 GMT -8
Another crazy idea down the tubes. The amplifier has 4 AM transmitter tubes for output. Maybe I could parallel 2 microwave transformers instead. !.6kv transformers are a fortune. If I can find an old tv transformer should give me 400v into a a voltage and amperage doubler could be an option. Yes that could get your 1600, And Probably More. (The one I have here Measures 2,100 Volts.) And Two in parallel should get close to the required current. |
|
ndham
New Member
Posts: 6 
|
Post by ndham on Mar 3, 2016 20:11:43 GMT -8
Don't close this forum. Keeps idiots like me that think too much trying to be innovative out of trouble. You just saved a life, think about it. Idiots like me need a mentor like you.
Power supply problem solved. Epay circa 1960 5kv 2amp power supply with 1 3 amp 6v 6 tap secondary winding transformer and a separate 4 tap secondary 220v plate transformer.$175 US free shipping. weighs 45 pounds. It has like 16 tube sockets but will cannibalize it. The tubes come with crazy numbers that one sees on tube oscilloscopes and scientific instruments. eg 14cwz7 How they made it variable in 750v steps should be interesting to see. The doorknob capacitors #6 are worth a fortune, The paper capacitors were replaced with mylar capacitors. Magnified photo showed wiring in excellent condition.
I couldn't pass it up. 17 people were watching it.
2 new matched (same lot) microwave oven transformers would have cost me $73- $149. My wife will kill me when it arrives.
|
|
|
|
Post by retiredat55 on Mar 4, 2016 11:35:28 GMT -8
Gary, TS stands for Topic Starter, we use this on forums in the Netherlands.
Dante
|
|
|
|
Post by lamazoid on Mar 17, 2016 8:11:32 GMT -8
you can take MOT (microwave oven transformer) which puts out 2100V and down-regulate it to 1600v. this can be done with simple light dimmer circuit, or an autotransformer.
|
|
|
|
Post by Gary Lecomte on Mar 17, 2016 9:50:26 GMT -8
you can take MOT (microwave oven transformer) which puts out 2100V and down-regulate it to 1600v. this can be done with simple light dimmer circuit, or an autotransformer. If using a LIGHT Dimmer, It MUST have a TRIAC in it, so it will work on INDUCTIVE LOADS. NOT an SCR, which is Only good for RESISTIVE LOADS. |
|
|
|
Post by lamazoid on Mar 24, 2016 22:43:05 GMT -8
you can take MOT (microwave oven transformer) which puts out 2100V and down-regulate it to 1600v. this can be done with simple light dimmer circuit, or an autotransformer. If using a LIGHT Dimmer, It MUST have a TRIAC in it, so it will work on INDUCTIVE LOADS. NOT an SCR, which is Only good for RESISTIVE LOADS. as far as i know, most light dimmers use triacs. a long time ago, i was using it as regulator for my arc welder (yeah, old bulk and heavy iron core transformer  on primary side. dimmer was put between gates of two power SCRs, connected counter-parallel. This idea i took from Dan's design: www.dansworkshop.com/2008/03/homebuilt-arc-welder/it worked well, and maybe still works, i have sold it to local auto workshop and bought modern inverter welder  |
|
on primary side.