Hi everyone,
It may sound silly but I shall ask anyway. What is a "padder" capacitor? I read about "rock the padder into correct alignment" and "padder capacitors for low end tuning ranges". I looked into The Little Oxford Dictionary and there do seem to be such a word. Basically, what are padder capacitors and where can I find them on a schematic?

:Hi everyone,
:It may sound silly but I shall ask anyway. What is a "padder" capacitor? I read about "rock the padder into correct alignment" and "padder capacitors for low end tuning ranges". I looked into The Little Oxford Dictionary and there do not seem to be such a word. Basically, what are padder capacitors and where can I find them on a schematic?
:

Hi

A padder cap will be in series with the oscillator circuit in a radio when each section of a tuner is the same size. Usually adjustable by a screw and mounted under the chassis.

Here is the reason for a padder. The oscillator in a radio operates IF frequency above received station. It takes less of a capacity change to cover a range of frequencies above the received signal.

Since each tuner section will have the same capacity change a padder is added in series to reduce tuning range of the oscillator. Later radios used tuners with different size sections.

Norm

::Hi everyone,
::It may sound silly but I shall ask anyway. What is a "padder" capacitor? I read about "rock the padder into correct alignment" and "padder capacitors for low end tuning ranges". I looked into The Little Oxford Dictionary and there do not seem to be such a word. Basically, what are padder capacitors and where can I find them on a schematic?
::
:
:

:Hi
:
: A padder cap will be in series with the oscillator circuit in a radio when each section of a tuner is the same size. Usually adjustable by a screw and mounted under the chassis.
:
: Here is the reason for a padder. The oscillator in a radio operates IF frequency above received station. It takes less of a capacity change to cover a range of frequencies above the received signal.
:
: Since each tuner section will have the same capacity change a padder is added in series to reduce tuning range of the oscillator. Later radios used tuners with different size sections.
:
:Norm
:
:
:
:::Hi everyone,
:::It may sound silly but I shall ask anyway. What is a "padder" capacitor? I read about "rock the padder into correct alignment" and "padder capacitors for low end tuning ranges". I looked into The Little Oxford Dictionary and there do not seem to be such a word. Basically, what are padder capacitors and where can I find them on a schematic?
:::
::
Thank you Norm. I had thought that it was the station tuning capacitor.
Yen

Padder capacitors are usually denoted as a capacitor with an arrow on schematics, meaning that it is adjustable. They can be mounted on top of the tuning capacitor or just about anywhere else. They consist of two metal plates with a mica insulator between them. By adjusting the tension with a screw, you vary the capacitence of the device, and that is part of how you do an alignment to bring all the individual variances of the components together for best performance. By the way, since these are exposed to the environment they sometimes get fouled and need to be cleaned.

Count how many turns forward (by 1/4 turns is good enough) to where it becomes tight and write the number down or you will forget it. Then unscrew all the way, very carefully remove the mica, it is extremely brittle, spray everything with deoxit, mica should be clear when you are finished. If not, you can use paint thinner as a solvent. Let everything dry for a few hours, reassemble, make tight and loosen the same amount as you tightened. You will then be approximately in the same place you were before, but a touch up of the alignment will still be in order.

::Hi
::
:: A padder cap will be in series with the oscillator circuit in a radio when each section of a tuner is the same size. Usually adjustable by a screw and mounted under the chassis.
::
:: Here is the reason for a padder. The oscillator in a radio operates IF frequency above received station. It takes less of a capacity change to cover a range of frequencies above the received signal.
::
:: Since each tuner section will have the same capacity change a padder is added in series to reduce tuning range of the oscillator. Later radios used tuners with different size sections.
::
::Norm
::
::
::
::::Hi everyone,
::::It may sound silly but I shall ask anyway. What is a "padder" capacitor? I read about "rock the padder into correct alignment" and "padder capacitors for low end tuning ranges". I looked into The Little Oxford Dictionary and there do not seem to be such a word. Basically, what are padder capacitors and where can I find them on a schematic?
::::
:::
:Thank you Norm. I had thought that it was the station tuning capacitor.
:Yen
:
:
:
:

Thank you Codefox. That is marvellous. It was the terminology that puzzled me. Like I told Norm, I had thought that a padder capacitor was the station tuning capacitor. I read about "rocking the padder" and I thought what else could I rock then the tuning capacitor? Now I realize. I shall recondition the padder capacitor like you recomended. Thank you again.
Yen

:Padder capacitors are usually denoted as a capacitor with an arrow on schematics, meaning that it is adjustable. They can be mounted on top of the tuning capacitor or just about anywhere else. They consist of two metal plates with a mica insulator between them. By adjusting the tension with a screw, you vary the capacitence of the device, and that is part of how you do an alignment to bring all the individual variances of the components together for best performance. By the way, since these are exposed to the environment they sometimes get fouled and need to be cleaned.
:
:Count how many turns forward (by 1/4 turns is good enough) to where it becomes tight and write the number down or you will forget it. Then unscrew all the way, very carefully remove the mica, it is extremely brittle, spray everything with deoxit, mica should be clear when you are finished. If not, you can use paint thinner as a solvent. Let everything dry for a few hours, reassemble, make tight and loosen the same amount as you tightened. You will then be approximately in the same place you were before, but a touch up of the alignment will still be in order.
:
:
:::Hi
:::
::: A padder cap will be in series with the oscillator circuit in a radio when each section of a tuner is the same size. Usually adjustable by a screw and mounted under the chassis.
:::
::: Here is the reason for a padder. The oscillator in a radio operates IF frequency above received station. It takes less of a capacity change to cover a range of frequencies above the received signal.
:::
::: Since each tuner section will have the same capacity change a padder is added in series to reduce tuning range of the oscillator. Later radios used tuners with different size sections.
:::
:::Norm
:::
:::
:::
:::::Hi everyone,
:::::It may sound silly but I shall ask anyway. What is a "padder" capacitor? I read about "rock the padder into correct alignment" and "padder capacitors for low end tuning ranges". I looked into The Little Oxford Dictionary and there do not seem to be such a word. Basically, what are padder capacitors and where can I find them on a schematic?
:::::
::::
::Thank you Norm. I had thought that it was the station tuning capacitor.
::Yen
::
::
::
::
:
:

Thank you Codefox. That is marvellous. It was the terminology that puzzled me. Like I told Norm, I had thought that a padder capacitor was the station tuning capacitor. I read about "rocking the padder" and I thought what else could I rock then the tuning capacitor? Now I realize. I shall recondition the padder capacitor like you recomended. Thank you again.
Yen

:Padder capacitors are usually denoted as a capacitor with an arrow on schematics, meaning that it is adjustable. They can be mounted on top of the tuning capacitor or just about anywhere else. They consist of two metal plates with a mica insulator between them. By adjusting the tension with a screw, you vary the capacitence of the device, and that is part of how you do an alignment to bring all the individual variances of the components together for best performance. By the way, since these are exposed to the environment they sometimes get fouled and need to be cleaned.
:
:Count how many turns forward (by 1/4 turns is good enough) to where it becomes tight and write the number down or you will forget it. Then unscrew all the way, very carefully remove the mica, it is extremely brittle, spray everything with deoxit, mica should be clear when you are finished. If not, you can use paint thinner as a solvent. Let everything dry for a few hours, reassemble, make tight and loosen the same amount as you tightened. You will then be approximately in the same place you were before, but a touch up of the alignment will still be in order.
:
:
:::Hi
:::
::: A padder cap will be in series with the oscillator circuit in a radio when each section of a tuner is the same size. Usually adjustable by a screw and mounted under the chassis.
:::
::: Here is the reason for a padder. The oscillator in a radio operates IF frequency above received station. It takes less of a capacity change to cover a range of frequencies above the received signal.
:::
::: Since each tuner section will have the same capacity change a padder is added in series to reduce tuning range of the oscillator. Later radios used tuners with different size sections.
:::
:::Norm
:::
:::
:::
:::::Hi everyone,
:::::It may sound silly but I shall ask anyway. What is a "padder" capacitor? I read about "rock the padder into correct alignment" and "padder capacitors for low end tuning ranges". I looked into The Little Oxford Dictionary and there do not seem to be such a word. Basically, what are padder capacitors and where can I find them on a schematic?
:::::
::::
::Thank you Norm. I had thought that it was the station tuning capacitor.
::Yen
::
::
::
::
:
: