Search found 116 matches
- Wed Mar 17, 2010 8:35 pm
- Forum: Technical Discussion
- Topic: heater wire
- Replies: 25
- Views: 8483
Re: heater wire
yeah I'm sure the PVC insulation melts before wire, doesn't copper have a high melting point?
- Wed Mar 17, 2010 8:00 pm
- Forum: Technical Discussion
- Topic: heater wire
- Replies: 25
- Views: 8483
Re: heater wire
A typical 50 watt Marshall draws about 4 amps and 20 ga is rated at 11 amps, more than sufficient for heater wiring.
heck 22 gauge is rated at 7 amps and I bet that is conservative.
btw It's the insulation that limits the wires amp rating.
http://www.powerstream.com/Wire_Size.htm
heck 22 gauge is rated at 7 amps and I bet that is conservative.
btw It's the insulation that limits the wires amp rating.
http://www.powerstream.com/Wire_Size.htm
- Sun Feb 14, 2010 3:13 pm
- Forum: Trainwreck Discussion
- Topic: pots of choice
- Replies: 36
- Views: 7904
Re: pots of choice
Richie,
The newer PEC casings do look a bit different than ones made a few years ago but aren't PEC still made in Canada? I think Clarostat are made in Mexico..
The newer PEC casings do look a bit different than ones made a few years ago but aren't PEC still made in Canada? I think Clarostat are made in Mexico..
- Sun Dec 06, 2009 8:23 pm
- Forum: Technical Discussion
- Topic: Anybody open up a Hotplate???
- Replies: 6
- Views: 1732
- Fri Dec 04, 2009 3:42 am
- Forum: Trainwreck Discussion
- Topic: All Trainwreck BOM's updated again- V2.0
- Replies: 29
- Views: 6121
Re: All Trainwreck BOM's updated again- V2.0
I remember this being brought up years ago at the JTM45 group resulting in some having multi tap PT's made up, Marstran has a such a PT available for the TW
- Sat Nov 21, 2009 6:21 pm
- Forum: Trainwreck Discussion
- Topic: pots of choice
- Replies: 36
- Views: 7904
Re: pots of choice
correction, looking at the wrong data sheets
- Sat Nov 21, 2009 5:42 pm
- Forum: Trainwreck Discussion
- Topic: Siemens el34 on ebay
- Replies: 7
- Views: 3423
Re: Siemens el34 on ebay
Yeah didn't Tesla switched to black bases and high domed tops around the mid eighties?
fwiw I have a pair of Siemens labeled EL34 made in Holland with light brown base and DD getter's. Codes are wiped off but guessing probably late fifties,early sixties?
fwiw I have a pair of Siemens labeled EL34 made in Holland with light brown base and DD getter's. Codes are wiped off but guessing probably late fifties,early sixties?
- Sat Nov 21, 2009 2:07 am
- Forum: Trainwreck Discussion
- Topic: pots of choice
- Replies: 36
- Views: 7904
Re: pots of choice
some prefer the sound of alphas, esp. in plexis. alphas are CCs whereas most PECs are plastic Yup Alpha are carbon composition and PEC are hot molded carbon unless I'm looking at the data sheets :lol: FYI Found this, lists the material used in various pots http://www2.eem.com/Potentiometers_Trimmer...
- Sat Nov 14, 2009 7:00 pm
- Forum: Trainwreck Discussion
- Topic: pots of choice
- Replies: 36
- Views: 7904
Re: pots of choice
Are those Alpha pots in Francesca ? Maybe they are but the back looks like older cts or something
- Sat Apr 04, 2009 2:10 am
- Forum: Technical Discussion
- Topic: Socket questions...
- Replies: 6
- Views: 1476
Re: Socket questions...
If not bent over a bit the contact can pull out from the top of the socket when removing a tube
- Sat Jan 24, 2009 7:34 pm
- Forum: Trainwreck Discussion
- Topic: TW with Effects loop????
- Replies: 19
- Views: 4184
Re: TW with Effects loop????
In a Vintage Guitar Magazine article Ken did mention he was contemplating putting an fx loop in a Rocket IIRC, don't know if he actually did it though
- Mon Dec 01, 2008 10:49 pm
- Forum: Technical Discussion
- Topic: RV4 Potentiometers
- Replies: 5
- Views: 1448
Re: RV4 Potentiometers
Hi Steve,
The Bourns look good, any plans for a 5K linear ?
Thanks
The Bourns look good, any plans for a 5K linear ?
Thanks
- Fri Nov 28, 2008 7:05 pm
- Forum: Trainwreck Discussion
- Topic: Really liking my new "Ultimate Attenuator"...
- Replies: 26
- Views: 8678
Re: Really liking my new "Ultimate Attenuator"...
The big wirewound resistors typically used (in the Airbrake, etc.) actually have a small to moderate amount of inbuilt inductance, due to the fact they're basically a long coil of wire wound on a ceramic form. --mark Mark, IIRC you can for an additional fee order non inductive power resistors from ...
- Thu Oct 02, 2008 12:10 am
- Forum: Technical Discussion
- Topic: OT for a Plexi 50 style amp
- Replies: 10
- Views: 2874
Re: OT for a Plexi 50 style amp
Another vote for Marstran, I have his RS OT and am working on an amp now using the 784-128 http://www.marstran.com/50W%20OT%20128.htm
Just a note Brian offers two types of OT's for 50 watt Marshall's the early 784-128 and the later 748-139 OT. Ask Brian for the details
Just a note Brian offers two types of OT's for 50 watt Marshall's the early 784-128 and the later 748-139 OT. Ask Brian for the details
- Fri Jun 27, 2008 9:17 pm
- Forum: Trainwreck Discussion
- Topic: 220-250V Express Pilot Light & MOV
- Replies: 2
- Views: 984
Re: 220-250V Express Pilot Light & MOV
Ron,
Mouser doesn't have the proper MOV? for the indicator you can either get a 6.3v indicator and run off the heaters or again if Mouser etc doesn't have one there are 250v indicators on ebay from time to time..
Mouser doesn't have the proper MOV? for the indicator you can either get a 6.3v indicator and run off the heaters or again if Mouser etc doesn't have one there are 250v indicators on ebay from time to time..