|HOME| |DIY FAQ| |GEO FAQ| |Debugging Page| |Links| |Schematics| |Wiki| |Layouts Gallery| |STORE|
|AMPAGE| |GEOFEX| |AMZ|

Welcome, Guest. Please login or register.
Did you miss your activation email?
December 21, 2014, 10:52:15 PM
978115 Posts in 104090 Topics by 33408 Members
Latest Member: electricco
Home Help Login Register
DIYstompboxes.com  |  DIY Stompboxes  |  Building your own stompbox  |  CK5702/6Ж1Б-В 0 Members and 1 Guest are viewing this topic. « previous next »
Pages: [1] Go Down Print
Author Topic: CK5702/6Ж1Б-В  (Read 3412 times)
3080
Posts: 44


WWW
CK5702/6Ж1Б-В
« on: January 25, 2010, 04:25:28 PM »

I get a few CK5702 submini pentodes... any schematic/project with them? I cannot find anything.  Huh
Logged
frequencycentral
Posts: 4897


Kicking the sh!t of of your speakers since 2008


WWW
Re: CK5702/6Ж1Б-В
« Reply #1 on: January 25, 2010, 05:31:05 PM »

Data sheet: http://frank.pocnet.net/sheets/127/5/5702WA.pdf
Logged

3080
Posts: 44


WWW
Re: CK5702/6Ж1Б-В
« Reply #2 on: January 25, 2010, 05:32:54 PM »

is it equivalent with 5840?
Logged
3080
Posts: 44


WWW
Re: CK5702/6Ж1Б-В
« Reply #3 on: January 25, 2010, 05:42:48 PM »


thanks
Logged
frequencycentral
Posts: 4897


Kicking the sh!t of of your speakers since 2008


WWW
Re: CK5702/6Ж1Б-В
« Reply #4 on: January 25, 2010, 05:45:38 PM »

The 5702 has very similar grid curves to the 5840 and has a higher plate dissipation (like 1.5 to 1.7W or somewhere thereabouts). I think you can actually use this as an output tube with a primary impedance in the 11k to 14k range.
Logged

3080
Posts: 44


WWW
Re: CK5702/6Ж1Б-В
« Reply #5 on: January 26, 2010, 06:06:16 AM »

The 5702 has very similar grid curves to the 5840 and has a higher plate dissipation (like 1.5 to 1.7W or somewhere thereabouts). I think you can actually use this as an output tube with a primary impedance in the 11k to 14k range.

Is it possible to use your design with this tube? Any mods?

Logged
frequencycentral
Posts: 4897


Kicking the sh!t of of your speakers since 2008


WWW
Re: CK5702/6Ж1Б-В
« Reply #6 on: January 26, 2010, 12:59:05 PM »

Worth a shot (on breadboard) providing you observe the correct pinouts! 5840 and 5702 pinouts differ.
Logged

3080
Posts: 44


WWW
Re: CK5702/6Ж1Б-В
« Reply #7 on: February 02, 2010, 12:21:42 PM »

I built it... it works, but it is so silent... any tips to increase gain or the output volume?
Logged
frequencycentral
Posts: 4897


Kicking the sh!t of of your speakers since 2008


WWW
Re: CK5702/6Ж1Б-В
« Reply #8 on: February 02, 2010, 12:23:53 PM »

Try making the grid 2 resistor and the plate resistor into pots and see what you can dial in. Or you could try more volts: http://www.diystompboxes.com/smfforum/index.php?topic=74088.0

Logged

3080
Posts: 44


WWW
Re: CK5702/6Ж1Б-В
« Reply #9 on: February 02, 2010, 03:11:08 PM »

http://www.ultrarapide.net/moregeometrico/SIMPLEPREAMPS.pdf

tomorrow's free-time activity...  Undecided
Logged
PRR
Posts: 6235


Paul R. - Maine USA


Re: CK5702/6Ж1Б-В
« Reply #10 on: February 03, 2010, 12:24:07 AM »

At 12V?? It's gonna distort!   Cheesy

Set the ratio of plate and screen resistors like the ratio of typical plate and screen currents. Fiddle the cathode resistor to set the plate roughly halfway up the power supply voltage.

Squinting too deep in the dark corner, I estimate 5702 at 12V perhaps like this:



If that aint happy, disconnect that stuff from G2, tie G2 to plate. It's maybe a better triode than pentode. You'll still get more distortion from a well-whacked guitar than you'll know what to do with.
Logged
Pages: [1] Go Up Print 
« previous next »
Jump to: