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 Post subject: Re: Single-ended or PP?
PostPosted: March 23rd, 2018, 1:57 pm 
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Joined: March 2nd, 2013, 2:43 pm
Posts: 132
Location: Potomac, MD
I made this at least 20 years ago. And here is guess who wearing it. 12AU7 multivibrator actually runs the watch motor. DC to DC converter uses 6 volts. Battery runs it for several hours. Not recommended for accurate time keeping, but music always sounds better when keeping time with it.


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 Post subject: Re: Single-ended or PP?
PostPosted: March 23rd, 2018, 2:03 pm 
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Joined: February 28th, 2013, 3:31 pm
Posts: 131
;-) Does it run more smoothly with a NOS Telefunkin, or Amperex?


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 Post subject: Re: Single-ended or PP?
PostPosted: March 23rd, 2018, 2:04 pm 
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Joined: February 28th, 2013, 3:31 pm
Posts: 835
Cool but not steampunk. Check out this site. Over 800 steampunk watches.

https://www.zazzle.com/steampunk+mens+watches


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 Post subject: Re: Single-ended or PP?
PostPosted: March 23rd, 2018, 2:20 pm 
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Joined: January 15th, 2015, 7:19 am
Posts: 565
Location: Baltimore MD
I had to look up "steampunk"


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 Post subject: Re: Single-ended or PP?
PostPosted: March 23rd, 2018, 2:36 pm 
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Joined: July 25th, 2015, 12:47 pm
Posts: 55
Good one David. Let me see if I can top that.


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 Post subject: Re: Single-ended or PP?
PostPosted: March 26th, 2018, 12:43 pm 
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Joined: February 28th, 2013, 3:31 pm
Posts: 835
I received my Tesla watch and it is very cool. Like other "tube" equipment it is quite large and heavy. There are actually two movements for time. One is the minute and hour movement that takes a watch battery. The other is the seconds movement that has it's own watch battery. There is yet a third battery, the ubiquitous CR2032 to run the LEDs that simulate the filaments in the faux tubes.

When you turn the switch on to light up the "filaments" they turn on for 5 seconds and then turn off to save battery power. To turn them back on you have to turn the switch off and on again and the timeout process repeats. I'm including a photo that shows the inside of the case.


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 Post subject: Re: Single-ended or PP?
PostPosted: March 26th, 2018, 1:10 pm 
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Joined: July 25th, 2015, 12:47 pm
Posts: 55
I thought I was the crazy one. I am glad there is another one out there.

Now if we can make one with real tubes one for the left and other for the right channel, (and a WAV player) to drive a headphone... and we need a DAC... well, that battery isn't going to do it... I think you need a mini car battery.


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 Post subject: Re: Single-ended or PP?
PostPosted: March 26th, 2018, 1:33 pm 
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Joined: July 24th, 2015, 4:17 pm
Posts: 615
Location: Parkville, Maryland
dberning wrote:
Here's the real thing. Push-Pull and no fakey LEDs.

David


If you're near-sighted you could poke your eye out checking the time. :crazy:

_________________
Walt


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 Post subject: Re: Single-ended or PP?
PostPosted: March 26th, 2018, 1:57 pm 
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Joined: July 25th, 2015, 12:47 pm
Posts: 55
SoundMods wrote:
dberning wrote:
Here's the real thing. Push-Pull and no fakey LEDs.

David


If you're near-sighted you could poke your eye out checking the time. :crazy:


That explains his glasses.


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 Post subject: Re: Single-ended or PP?
PostPosted: March 26th, 2018, 1:59 pm 
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Joined: January 14th, 2015, 11:15 pm
Posts: 135
With two tubes, you might even be able to poke out both eyes at once.

ray


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