Amp/Preamp Asylum

Looking for a new Amp or Preamp? If you're after tubes, post over here.

Use this form to submit comments directly to the Asylum moderators for this forum. We're particularly interested in truly outstanding posts that might be added to our FAQs.
You may also use this form to provide feedback or to call attention to messages that may be in violation of our content rules.

You must login to use this feature.

Inmate Login

By default, logging in will set a session cookie that disappears when you close your browser. Clicking on the 'Remember my Moniker & Password' below will cause a permanent 'Login Cookie' to be set.

Moniker/Username: The Name that you picked or by default, your email. Forgot Moniker?	Examples "Rapper", "Bob W", "joe@aol.com".
Password:	Forgot Password?
	Remember my Moniker & Password ( What's this?)

If you don't have an Asylum Account, you can create one by clicking Here.

Our privacy policy can be reviewed by clicking Here.

Inmate Comments

From:
Your Email:
Subject:

Message Comments

Original Message

not yet in electronics but

Posted by Story on December 29, 2020 at 08:11:36:
I built a full wave power supply for an attic fan made in China that use to be solar (panel failed). I wanted it to stay on longer and during cloudy days. Just a timer and set to max voltage with a variac. Better than me going up in the hot summer attic and doing more insulating.

Eventually the motor shorted out and the diode heat melted the solder. I used 25 amp diodes and they were still good after.

For a couple years it worked quite well anyway. Now I have one that's 120vac.