Why plate degeneration in a cathode follower?

Jan 09, 2013 39 Replies

He must have a lot of disciples, I've seen their work everywhere. :(

The "X" indicates where i broke a connection, the arrows show a new connection (eg: move grid resistor from ground to cathode), and adding the jumpers put across the 10K plate degeneration resistors.

Lastly, the arrows show that the wire from the sine/square/pulse switch was moved from the divider to the (other) plate. Maybe i should experiment trying V5A instead of V5B plate for even greater overdrive (level was 6Vpk-pk now 30Vpk-pk; cold be 65Vpk-pk if used V5A). PS: Sorry i forgot how the Abbott & Costello joke went..

Maybe, but having a signal generator with sine output FIVE TIMES LESS in amplitude WRT other waveform output selections just ain't kosher. The CFs do not run any harder than before, the V5A bypass gives more drive for a better square / "pulse" waveform and has little effect on the oscillator; V5A is nowhere near to grid or plate glow..

Maybe we could start by defining WHAT is it supposed to do? .... spelling out GOZINTA/GOZOUTA.

(I actually have made three parts for PSpice: GOZINTA, GOZOUTA and GOZBI :-) ...Jim Thompson

| James E.Thompson, CTO | mens | | Analog Innovations, Inc. | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | Phoenix, Arizona 85048 Skype: Contacts Only | | | Voice:(480)460-2350 Fax: Available upon request | Brass Rat | | E-mail Icon at http://www.analog-innovations.com | 1962 | I love to cook with wine. Sometimes I even put it in the food.

Maybe we could start by defining WHAT is it supposed to do? .... spelling out GOZINTA/GOZOUTA.

(I actually have made three parts for PSpice: GOZINTA, GOZOUTA and GOZBI :-) ...Jim Thompson

| James E.Thompson, CTO | mens | | Analog Innovations, Inc. | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | Phoenix, Arizona 85048 Skype: Contacts Only | | | Voice:(480)460-2350 Fax: Available upon request | Brass Rat | | E-mail Icon at http://www.analog-innovations.com | 1962 | I love to cook with wine. Sometimes I even put it in the food.

For anybody that is interested:

formatting link

First find of course.

?-)

It's better acted out.

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Joerg needs GOZBANG, as well.

Perhaps! I think he already covers that with GOZFLOP >:-}

GOZINTA, GOZOUTA and GOZBI are actually my "port" symbols, more compact than those provided with PSpice, and with easier to remember names ;-) ...Jim Thompson

| James E.Thompson, CTO | mens | | Analog Innovations, Inc. | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | Phoenix, Arizona 85048 Skype: Contacts Only | | | Voice:(480)460-2350 Fax: Available upon request | Brass Rat | | E-mail Icon at http://www.analog-innovations.com | 1962 | I love to cook with wine. Sometimes I even put it in the food.

You stole GOZINTA from Jethtro Bodine. :)

Prob-ba-LEE >:-} ...Jim Thompson

| James E.Thompson, CTO | mens | | Analog Innovations, Inc. | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | Phoenix, Arizona 85048 Skype: Contacts Only | | | Voice:(480)460-2350 Fax: Available upon request | Brass Rat | | E-mail Icon at http://www.analog-innovations.com | 1962 | I love to cook with wine. Sometimes I even put it in the food.

At least you ain't tryin to be no double naught spy. :)

(if

NO

reduced

Sorry, i do not live in the PLAINs area of the US; i live in WA. Itza signal generator; selectable output sine, square, pulse.

How do you know ?>:-} ...Jim Thompson

| James E.Thompson, CTO | mens | | Analog Innovations, Inc. | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | Phoenix, Arizona 85048 Skype: Contacts Only | | | Voice:(480)460-2350 Fax: Available upon request | Brass Rat | | E-mail Icon at http://www.analog-innovations.com | 1962 | I love to cook with wine. Sometimes I even put it in the food.

(if

NO

not

increase

reduced

Well? Describe how it's supposed to work... this switch position does this, etc., and the output is WHERE? ...Jim Thompson

| James E.Thompson, CTO | mens | | Analog Innovations, Inc. | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | Phoenix, Arizona 85048 Skype: Contacts Only | | | Voice:(480)460-2350 Fax: Available upon request | Brass Rat | | E-mail Icon at http://www.analog-innovations.com | 1962 | I love to cook with wine. Sometimes I even put it in the food.

(if

the

more

NO

not

increase

reduced

The OP could start by restoring the switch labels (and tube envelopes) in the schematic.

Tauno Voipio

(if

the

more

NO

not

increase

reduced

I give up; if you cannot read a schematic..

(if

the

more

plate, NO

not

increase

cathode,

reduced

Knock off the horse-s*it...I cannot read schematic.

If you want help, ask nicely >:-} ...Jim Thompson

| James E.Thompson, CTO | mens | | Analog Innovations, Inc. | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | Phoenix, Arizona 85048 Skype: Contacts Only | | | Voice:(480)460-2350 Fax: Available upon request | Brass Rat | | E-mail Icon at http://www.analog-innovations.com | 1962 | I love to cook with wine. Sometimes I even put it in the food.

Someone else designs his electronics. :)

Wasn't The Who on first and Jimi Hendrix on third?

Many thanks, Don Lancaster voice phone: (928)428-4073 Synergetics 3860 West First Street Box 809 Thatcher, AZ 85552 rss: http://www.tinaja.com/whtnu.xml email: don@tinaja.com Please visit my GURU's LAIR web site at http://www.tinaja.com

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