I do like how logical and simple your designs are. Nothing unnecessary, no fancy complex things. Just good design and layout. Not sure about the accuracy being an issue given it is for tube testing. It looks pretty darn accurate with a single turn pot. I honestly really like this supply and I can see other uses for it given you can get the b+ right down to just under 10 volts. Thanks so much for sharing this with us.
It kind of reminds me of your capacitor tester/reformer at the moment. Nice and tidy now you've had the boards printed. Looking forward to the next phase of this project.
I enjoy the enthusiasm. However I believe someday you will get a vintage tube tester. One of those with tube charts and stuff that makes one look clever and professional. In reality they make a repair man's life easyer. I get it, I for instance dont need more guitar amplifiers but I would like to actually build one someday. Thanks for the update!
For the heater voltage you could also use DC from a adjustable buck/boost converter after a bridge rectifier and filtercap. And remember that shorts are also possible in tubes, so independent PSU's are probably better ?
It will be interesting to see what effect, if any, loading B+ & screen voltage connections will have on the negative bias supply. It is unregulated, and the loading of the positive voltage supplies may be coupled through the power transformer to the negative supply…
Great board. Sweet pots. I imagine that you are thinking to use an additional, small transformer to power your meters. But, you might see if you can sneak a few turns of wire onto your exisitng transformer, to make the needed extra secondaries. You don't need much current to run the meters, so some small gauge magnet wire might do the trick.
Manuel, I was surprised that you didn't put foil pads on both sides of the PCB for Q1 & Q2 for heat dissipation. Certain short conditions could drive those very hot.
I thought about it, but as the metal backing these components is at high voltage, I did not want to risk shorting it to ground. I prefer to add a separate heartsink above the board if necessary.
This is absolutely fascinating! You know, I've only got one item with tubes in it (at the moment...), my Hacker GP42 record player but I might consider building one of these just for the sheer hell of it! Besides, if I do, then it'd be a good idea to buy some other items with tubes so I can justify the tube tester. As ulterior motives go, this one's a beauty!
Nao, vou publicar aqui mesmo, mas quero confirmar todo o funcionamento sob carga antes de deitar foguetes e possivelmente induzir outros em erro 😊 O Patreon não dá nada que não seja apresentado aqui gratuitamente. Criei a conta Patreon porque alguns subscritores queriam apoiar o canal. é completamente opcional.
@@electronicsoldandnew … ok, vou subscrever o Patreon de qualquer forma,… você merece, o conteúdo é fantástico! Não considera a possibilidade de vender as PCBs? Votos de felicidades e continuação do excelente trabalho! Melhores Cumprimentos Paulo
Hello MC. This is turning out very well. I am curious, do you sell or raffle off all of the extra boards or are you in business producing PSU's etc? BR Mark
No, I neither sell nor raffle off the boards. When the project is finalised, I post the gerbers to the share section on PCBway’s website for anyone who wants to produce their own.
I often use various boards in the testing stage. Also, it would be unfair to the sponsors for me to give away their potential business. I don’t gain anything from their sales but it’s still a question of fairness for me.
I do like how logical and simple your designs are. Nothing unnecessary, no fancy complex things. Just good design and layout.
Not sure about the accuracy being an issue given it is for tube testing. It looks pretty darn accurate with a single turn pot. I honestly really like this supply and I can see other uses for it given you can get the b+ right down to just under 10 volts. Thanks so much for sharing this with us.
my pleasure
It kind of reminds me of your capacitor tester/reformer at the moment. Nice and tidy now you've had the boards printed. Looking forward to the next phase of this project.
👍
I agree with your comment on the default footprints - they are very cheap with the solder pads. I use my own foot prints too.
👍
Impressive work Manuel, always a pleasure to watch 🙂
thanks
Congratulations on the 1st PCB Test! It's exiting to see the progress! 👍
👍
Nice to see the first test without releasing the magic smoke.
Looking forward to the powersupply design for the panelmeters.
👍
I enjoy the enthusiasm. However I believe someday you will get a vintage tube tester. One of those with tube charts and stuff that makes one look clever and professional. In reality they make a repair man's life easyer. I get it, I for instance dont need more guitar amplifiers but I would like to actually build one someday. Thanks for the update!
I know exactly what you mean 😊
Nifty protect! Cheers!
thanks
Looking forward to building this project with your pcbs. Your capacitortester is still a useful device to me!
👍 great to know
For the heater voltage you could also use DC from a adjustable buck/boost converter after a bridge rectifier and filtercap.
And remember that shorts are also possible in tubes, so independent PSU's are probably better ?
probably
It will be interesting to see what effect, if any, loading B+ & screen voltage connections will have on the negative bias supply. It is unregulated, and the loading of the positive voltage supplies may be coupled through the power transformer to the negative supply…
We’ll see how it handles load.
Great progress, looking good
thanks
Great board. Sweet pots. I imagine that you are thinking to use an additional, small transformer to power your meters. But, you might see if you can sneak a few turns of wire onto your exisitng transformer, to make the needed extra secondaries. You don't need much current to run the meters, so some small gauge magnet wire might do the trick.
👍
Great, a new upload.👍🏻
😊
👍👍👍
Deixo a sugestão de instalar um conversor DCtoDC para alimentar os medidores, buscando a tensão à placa. Muito interessante este projecto. Obrigado.
👍
Manuel, I was surprised that you didn't put foil pads on both sides of the PCB for Q1 & Q2 for heat dissipation. Certain short conditions could drive those very hot.
I thought about it, but as the metal backing these components is at high voltage, I did not want to risk shorting it to ground. I prefer to add a separate heartsink above the board if necessary.
@@electronicsoldandnew - I thought of that as well...great project.
This is absolutely fascinating! You know, I've only got one item with tubes in it (at the moment...), my Hacker GP42 record player but I might consider building one of these just for the sheer hell of it! Besides, if I do, then it'd be a good idea to buy some other items with tubes so I can justify the tube tester. As ulterior motives go, this one's a beauty!
all good reasons 😊
What is the specification of the transformer please
Viva!… Óptimos vídeos!
Muito Obrigado!
prazer
@@electronicsoldandnew , viva, …. Os esquemáticos é demais doca estão disponíveis no Patreon ?
Obrigado!
Nao, vou publicar aqui mesmo, mas quero confirmar todo o funcionamento sob carga antes de deitar foguetes e possivelmente induzir outros em erro 😊
O Patreon não dá nada que não seja apresentado aqui gratuitamente. Criei a conta Patreon porque alguns subscritores queriam apoiar o canal. é completamente opcional.
@@electronicsoldandnew … ok, vou subscrever o Patreon de qualquer forma,… você merece, o conteúdo é fantástico!
Não considera a possibilidade de vender as PCBs?
Votos de felicidades e continuação do excelente trabalho!
Melhores Cumprimentos
Paulo
Obrigado pela apoio.
Não pretendo fazer quaisquer vendas uma vez que esse processo requer tempo que tanto me falta 😊
Hello MC. This is turning out very well. I am curious, do you sell or raffle off all of the extra boards or are you in business producing PSU's etc? BR Mark
No, I neither sell nor raffle off the boards. When the project is finalised, I post the gerbers to the share section on PCBway’s website for anyone who wants to produce their own.
@@electronicsoldandnew I just wondered what you did with the other 9 boards...🤔
I often use various boards in the testing stage. Also, it would be unfair to the sponsors for me to give away their potential business. I don’t gain anything from their sales but it’s still a question of fairness for me.
@@electronicsoldandnew That makes perfect sense. Keep up the good work 😇
👍
I would like to purchase your PCB. Must I become a patreon member?
No, I’m not selling PCBs at all. I will share the gerbers when I’m comfortable that it works perfectly.