That little inverter is built much better than I would have guessed. If you need more power, packing along another battery or putting it in parallel with the first is an easy option. Full of win.
Love your channel haven't been with you for 10 years but I've been with you ever since I found you keep up the good work and I love watching your builds you I learn a lot from you 73 from KE0UEF
The fact that the output is isolated from the input is excellent news. Sure as heck eliminates a lot of 9 v batteries , which cost could come out higher than the inverter. The drone battery is rechargeable so a win win !! An excellent idea for HV !!! Graham VE3WGW
Hi , love your videos The inverter switches at a hi fq Then rectify to 180 v DC then chops at 60 hz . Use the hi fq chop to make 300 vdc ... But what you've got is great !!
Reviewing your old videos, quite impressed we share a fondness for WW-2 surplus. The WU2D portable is right out of one of a ham 50s magazines, your engineering background slips out with your power supply approach kudos.
Great project! The inverter is an excellent idea for the power supply. I'm getting excited about the big day when you put this on the air. Love the high voltage key!
This is a great option for, not only portable but also an option for the shack for hams that want to dip their toe in the tube world, without the hassle (and cost) of procuring xformers and building an HV supply. IThanks for this Mike…. I’m already drowning in things I want to do, one more thing on the list!! 😂😂😂 73 de VK2AOE
@@TheArtofEngineering Today i'm home and I decided to tackle a failure in my main transmitter external HV Power Supply. This thing has been flawless since 1990. I just removed it and its scary how things have aged.
Great work! I'm currently working on a similar themed valve project that also uses a cannibalised switchmode transformer. Some months back you built a PDM AM rig. I intend to put that PDM signal through the transformer, low pass filter it, and generate a modulated B+ which I can use to plate modulate a 25W class-C tube final.
I like how well this works. I'm working on something for my Pye portable valve radio, which requires 90v HT and 1.5v for the heaters. I'm wanting to run it off only 3v. Your project has given me some new ideas.
Well done Mike! I would have never thought that cheap inverter would be that quiet on HF! And that battery is super small! Even a battery double or 4 times the size would easily fit into your transmitter. Then you would have lots of capacity to run the filaments and the H.V. May even have less voltage drop? 73
Its getting there. Next video I will have the entire transmitter packaged. The next issues to solve will be the receiver integration into the station and the on air human factors like how do I know i'm on frequency and do I need sidetone? and finally selecting the antenna type I want to take to the field.
This is great Mike... definitely works also as a stand alone video... It would be interesting to have more information on how we could look for something on the internet (eg Amazon etc) that has similar performance if we want to buy such an inverter... Dave G0KPZ
Way to go, buy an off the shelf Inverter! It's also a switching P.S. most likely modified Square wave output. If you dig father into the Inverter you should find a 12 vdc to about 150 vdc switching P.S. feeding four power Mosfets in a bridge circuit that generate the actual 120 VAC.
Just a thought being as I'm on the bottom of the world and we use 230V AC ...could a 12V to 220V AC inverter be used without the doubler? Would give 316V DC peak.
For the noise, I think it would be more useful to check on a wider bandwidth with a small SDR. We do see that many of the switching supply can do multiple spikes and almost no noise on some frequency. Yes those Switching PS use higher frequency for the switching to AC. While the DC to AC will switch at 60hz.
That little inverter is built much better than I would have guessed. If you need more power, packing along another battery or putting it in parallel with the first is an easy option. Full of win.
Love your channel haven't been with you for 10 years but I've been with you ever since I found you keep up the good work and I love watching your builds you I learn a lot from you 73 from KE0UEF
The fact that the output is isolated from the input is excellent news. Sure as heck eliminates a lot of 9 v batteries , which cost could come out higher than the inverter. The drone battery is rechargeable so a win win !! An excellent idea for HV !!!
Graham VE3WGW
Hi , love your videos
The inverter switches at a hi fq
Then rectify to 180 v DC then chops at 60 hz . Use the hi fq chop to make 300 vdc ...
But what you've got is great !!
Reviewing your old videos, quite impressed we share a fondness for WW-2 surplus. The WU2D portable is right out of one of a ham 50s magazines, your engineering background slips out with your power supply approach kudos.
Brilliant presentation. I enjoyed this very much. Definitely going to check out more of your videos.
Awesome, thank you!
Great project! The inverter is an excellent idea for the power supply. I'm getting excited about the big day when you put this on the air. Love the high voltage key!
This is a great option for, not only portable but also an option for the shack for hams that want to dip their toe in the tube world, without the hassle (and cost) of procuring xformers and building an HV supply. IThanks for this Mike…. I’m already drowning in things I want to do, one more thing on the list!! 😂😂😂 73 de VK2AOE
Dip your toe onto the valve plate cap and you could really learn.
@@MIKROWAVE1 Hi hi....My TS520 hasn't tried to kill me....I'm a fast learner....no belts yet ;) Love the content.
@@TheArtofEngineering Today i'm home and I decided to tackle a failure in my main transmitter external HV Power Supply. This thing has been flawless since 1990. I just removed it and its scary how things have aged.
@@MIKROWAVE1yes…. Probably as much as we have inside!!! 😂😂😂
Great work! I'm currently working on a similar themed valve project that also uses a cannibalised switchmode transformer. Some months back you built a PDM AM rig. I intend to put that PDM signal through the transformer, low pass filter it, and generate a modulated B+ which I can use to plate modulate a 25W class-C tube final.
PDM is a proven and efficient technique for AM, whether SS or Tube.
I like how well this works. I'm working on something for my Pye portable valve radio, which requires 90v HT and 1.5v for the heaters. I'm wanting to run it off only 3v. Your project has given me some new ideas.
This is a great project. I have a TBS-50C, Harvey Wells Bandmaster Senior on the shelf, without a power supply, for future project. Cool idea. KI4TG
Well done Mike! I would have never thought that cheap inverter would be that quiet on HF!
And that battery is super small! Even a battery double or 4 times the size would easily fit into your transmitter. Then you would have lots of capacity to run the filaments and the H.V. May even have less voltage drop? 73
Who knows why it is so quiet. The protection features on this inverter are giving me fits however.
Outstanding results.
Great Information!
Awesome build!
Its getting there. Next video I will have the entire transmitter packaged. The next issues to solve will be the receiver integration into the station and the on air human factors like how do I know i'm on frequency and do I need sidetone? and finally selecting the antenna type I want to take to the field.
This is great Mike... definitely works also as a stand alone video... It would be interesting to have more information on how we could look for something on the internet (eg Amazon etc) that has similar performance if we want to buy such an inverter... Dave G0KPZ
I wasted time and money on the different fleabay high voltage modules. This works much better! Thanks, Mike! 73 de W3IHM
fleabay?
@@Capecodham it's a nickname for eBay. "Flea" comes from the word fleamarket. And eBay is also a market full of junk 😉
@@chinsta00 Who the hell are you to put down a stock listed company with a good reputation? No self confidence, you have to name call?
@@Capecodham I did not invent the nickname.
@@chinsta00 You used it. If you called a black person the N-word and he calls you on it, would you say you didn't invent the word?
Way to go, buy an off the shelf Inverter! It's also a switching P.S. most likely modified Square wave output. If you dig father into the Inverter you should find a 12 vdc to about 150 vdc switching P.S. feeding four power Mosfets in a bridge circuit that generate the actual 120 VAC.
A schematic might help. This thing has too many safety overload features.
Just a thought being as I'm on the bottom of the world and we use 230V AC ...could a 12V to 220V AC inverter be used without the doubler? Would give 316V DC peak.
For the noise, I think it would be more useful to check on a wider bandwidth with a small SDR. We do see that many of the switching supply can do multiple spikes and almost no noise on some frequency. Yes those Switching PS use higher frequency for the switching to AC. While the DC to AC will switch at 60hz.
I am sure that would be more useful and faster!
Great Information ! What precautions do you need to be aware of with 300 volts across your key ?
Keying the cathodes or filaments in this case is not the same as keying the B+. There is far less voltage.
Please let us know when you plan to be on the air with the portable station.
Next week is integration and antenna. Then maybe in 2 weeks the field trip.
😂😂
use 7 inverters in series.
I saw this in P-Town.
@@MIKROWAVE1 What did you do with the time you saved not typing rovince? Do you live in M-chester?
@@Capecodham K got it.