Very good beginners tips Justin. I have a couple of HT supplies I've made up from several years ago. I remember the high voltage capacitors were always difficult to get. My HT supplies were around 250v and found a local supplier of caps around 450v. Good idea putting two of them in series. I never used any chokes as couldn't find an inexpensive scource. My aim is to replicate either a Codar AT5 schematic or one of F.G.Rayor's AM valve schematics from the old practical wireless magazines. One other difficult component was the modulation transformers. Enjoyed the video and looking forward to more. 73...M0DAD David
I need a transformer to supply (4) 813's for RF amplification, what would you suggest for voltage and current ratings?, I will use a separate transformer for the filliments. I've seen people use microwave oven transformers but, I'am not to fond of that idea.
This was a realy great lesson for beginners, thank You for making those videos!
Thanks so much for this video and info!
Very Good info Video ..Keep up the Good Work Justin..
Very good beginners tips Justin. I have a couple of HT supplies I've made up from several years ago. I remember the high voltage capacitors were always difficult to get. My HT supplies were around 250v and found a local supplier of caps around 450v. Good idea putting two of them in series. I never used any chokes as couldn't find an inexpensive scource. My aim is to replicate either a Codar AT5 schematic or one of F.G.Rayor's AM valve schematics from the old practical wireless magazines. One other difficult component was the modulation transformers. Enjoyed the video and looking forward to more. 73...M0DAD David
Right at the start, I thought the squeaky chair was a quick burst of rock guitar riff. LOL
Must get a new one!!
Thank you Justin :)
I need a transformer to supply (4) 813's for RF amplification, what would you suggest for voltage and current ratings?, I will use a separate transformer for the filliments. I've seen people use microwave oven transformers but, I'am not to fond of that idea.
If you plan to use 4 813 you will need something like 1.5-2kv at 1 amp