Skip to content
View in the app

A better way to browse. Learn more.

www.Head-Case.org

A full-screen app on your home screen with push notifications, badges and more.

To install this app on iOS and iPadOS
  1. Tap the Share icon in Safari
  2. Scroll the menu and tap Add to Home Screen.
  3. Tap Add in the top-right corner.
To install this app on Android
  1. Tap the 3-dot menu (⋮) in the top-right corner of the browser.
  2. Tap Add to Home screen or Install app.
  3. Confirm by tapping Install.

Closed - Megatron and GRHV PCB GB

Featured Replies

With these quotes and potential problems it is almost more beneficial to just get the Antek trafos and ship them to the Netherlands for the premium price. No fancy box to put on top of the case though... (and no 13/14VAC ones, just 15VAC so more heatsinking for the LV supply)

  • Replies 118
  • Views 28.2k
  • Created
  • Last Reply

Top Posters In This Topic

Most Popular Posts

  • Got my boards today. Thank You! I have posted pics before but here are some more of my build. I noticed these boards have a 12 V for the filaments. The old board did not have it.  

  • kevin gilmore
    kevin gilmore

    12v filament version posted pretty sure the original was done the way it was to accomodate the 6dj8 tubes for those that wanted to do that edit: the filaments of the output tubes are tied to

  • I have received payment from most. Thanks all for the prompt responses. I will be placing PCBnet amp board order today. The Gerber file used will be the megatron12v.zip with 12.6vac filament for

Posted Images

I'm waiting for two new trafos from Toroidy. If I have problems with it again probably I will try other manufacturers


Enviado desde mi SM-G920F mediante Tapatalk

I am very curious about your findings. Thanks in advance for any feedback on this.

  • Author

All packages with US shipping address have been posted to USPS Priority Mail. Please PayPal me $7.2 US for the postage.

Overseas packages will be posted next week. I'll PM each with the postage as it will be based on destination and weight.

Boards came in today. They look great. Thanks again for the GB!

  • Author

All international-destined packages have been sent too. I'll PM each with the postage.

Happy building!

On ‎01‎/‎06‎/‎2017 at 8:42 AM, steefdebruijn said:

I am very curious about your findings. Thanks in advance for any feedback on this.

Measures (no load):

AUDIO GRADE TSA300VA PRI:230V SEC:
> 2x360V & 350mA      386volt/386volt
> 18-0-18V & 600mA   18,63volt/18,63Volt
 
AUDIO GRADE TSA60VA PRI:230V SEC:
> 2x 6,3V & 4,5A  6.83volt/6,83volt

No noises or hum . The measures are... more or less but I'm worrying for HV (a difference of 26volt)

The difference in voltage is only app. 7%. If you look at other transformer specs you'll see that this is perfectly normal for a 300VA toroidal, so it should be absolutely nothing to worry about :)

//UFN

Thanks for the follow up. Toroidy still a candidate then. Should I run for 13, 14 or 15 VAC secondaries for 12VDC regulated?

Got my boards today. Thank You!

I have posted pics before but here are some more of my build. I noticed these boards have a 12 V for the filaments. The old board did not have it.

 

IMG_3834.jpg

IMG_3836.jpg

IMG_3838.jpg

IMG_3852.jpg

Package received here as well! Thank`s!

 

  • 2 weeks later...

Got my Pcb's!!!!

Thanks Michael

Enviado desde mi SM-G920F mediante Tapatalk

  • 11 months later...

This is probably a long shot, does anyone has additional megatron pcb to spare. I am very interested. Thank you.

  • Author
On 5/23/2018 at 9:22 PM, bluebyte60 said:

This is probably a long shot, does anyone has additional megatron pcb to spare. I am very interested. Thank you.

PM me if you are still interested. 

Please sign in to comment

You will be able to leave a comment after signing in

Sign In Now

Important Information

By using this site, you agree to our Terms of Use.

Account

Navigation

Search

Search

Configure browser push notifications

Chrome (Android)
  1. Tap the lock icon next to the address bar.
  2. Tap Permissions → Notifications.
  3. Adjust your preference.
Chrome (Desktop)
  1. Click the padlock icon in the address bar.
  2. Select Site settings.
  3. Find Notifications and adjust your preference.