Behold, R J Carpenter signalled from keyed 4-1000A filament:

Others have mentioned uses for these tubes. What they haven't mentioned
is that you will need a power supply delivering DC somewhere in the 150
to 250 volt range. It is absolutely vital that this supply have a
transformer to isolate you from the 115 V AC mains. Otherwise you'll
likely kill someone or yourself, since on side of the AC line is
connected to ground and the other is HOT with respect to every grounded
object.

Junk boxes all across the world may be full of these transformers, but
you may have trouble finding one. In that case you could use a couple
of 115 to 12-or-so volt transformers. One to go from 115 to 12 V AC,
the other connected "backwards" to go from 12 V AC back to 115 V AC. Now
you have 115 V AC with neither side grounded - much safer.

Just to add, if you only need ~15 watts for your project, bathroom shaver
isolation transformers hooked up in a FW doubler are great for this too.

You can get them from building surplus or second hand stores for 2-$5.

--
Gregg
*It's probably useful, even if it can't be SPICE'd*
http://geek.scorpiorising.ca

1. Better make sure they're good first..
2. Next get a known good replacement for each that you decide to use..
3. Think about it for a good while..
4. Then it's better find something you really want and need. Then get the
parts because building something just becasue you have the parts is
pennywise but pound foolish
5. Don't ask me how I know.
73
hank wd5jfr

"Kirk Mohror" wrote in message
...
I have the following tubes;

6SC7
6SL7
6SN7
5Y3
8552

Is there any transmitters or receivers that can be built with these?
If not TXor RX, what can be done with them?

Kirk Mohror
K7EKM


---
Outgoing mail is certified Virus Free.
Checked by AVG anti-virus system (http://www.grisoft.com).
Version: 6.0.542 / Virus Database: 336 - Release Date: 11/18/2003

1. Better make sure they're good first..
2. Next get a known good replacement for each that you decide to use..
3. Think about it for a good while..
4. Then it's better find something you really want and need. Then get the
parts because building something just becasue you have the parts is
pennywise but pound foolish
5. Don't ask me how I know.
73
hank wd5jfr

"Kirk Mohror" wrote in message
...
I have the following tubes;

6SC7
6SL7
6SN7
5Y3
8552

Is there any transmitters or receivers that can be built with these?
If not TXor RX, what can be done with them?

Kirk Mohror
K7EKM


---
Outgoing mail is certified Virus Free.
Checked by AVG anti-virus system (http://www.grisoft.com).
Version: 6.0.542 / Virus Database: 336 - Release Date: 11/18/2003

In article , "R J Carpenter"
writes:

Others have mentioned uses for these tubes. What they haven't mentioned is
that you will need a power supply delivering DC somewhere in the 150 to 250
volt range. It is absolutely vital that this supply have a transformer to
isolate you from the 115 V AC mains. Otherwise you'll likely kill someone or
yourself, since on side of the AC line is connected to ground and the other
is HOT with respect to every grounded object.

Junk boxes all across the world may be full of these transformers, but you
may have trouble finding one. In that case you could use a couple of 115 to
12-or-so volt transformers. One to go from 115 to 12 V AC, the other
connected "backwards" to go from 12 V AC back to 115 V AC. Now you have 115
V AC with neither side grounded - much safer.

Check out Hammond's website. They have a new transformer
section, recreating many of the "old" "B+" supply transformers,
formerly known as "plate transformers."

http://www.hammondmfg.com/5cindex.htm

Choose your kind of transformer from there...

Len Anderson
retired (from regular hours) electronic engineer person

In article , "R J Carpenter"
writes:

Others have mentioned uses for these tubes. What they haven't mentioned is
that you will need a power supply delivering DC somewhere in the 150 to 250
volt range. It is absolutely vital that this supply have a transformer to
isolate you from the 115 V AC mains. Otherwise you'll likely kill someone or
yourself, since on side of the AC line is connected to ground and the other
is HOT with respect to every grounded object.

Junk boxes all across the world may be full of these transformers, but you
may have trouble finding one. In that case you could use a couple of 115 to
12-or-so volt transformers. One to go from 115 to 12 V AC, the other
connected "backwards" to go from 12 V AC back to 115 V AC. Now you have 115
V AC with neither side grounded - much safer.

Check out Hammond's website. They have a new transformer
section, recreating many of the "old" "B+" supply transformers,
formerly known as "plate transformers."

http://www.hammondmfg.com/5cindex.htm

Choose your kind of transformer from there...

Len Anderson
retired (from regular hours) electronic engineer person