plate voltage

After 1976, the plate voltages were lowered slightly for improved reliability.

The grid regulates the extent to which plate voltage is increased.

Under certain conditions increasing the plate voltage causes a decrease in plate current.

A B battery is any battery used to provide the plate voltage of a vacuum tube.

A tube with an unusually high level of internal gas may exhibit a visible blue glow when plate voltage is applied.

These were much safer voltages for use in a hat, especially since the full plate voltage is dropped across the earphone.

An examination of the characteristics shown here will show that the plate current hardly changes as plate voltage varies.

The '57 radio used tubes that required only 12 volts of plate voltage and a transistor for the output stage.

A small negative voltage applied to the grid causes a large decrease in plate voltage.

If the plate voltage were too low, then there would be space charge near the filament that would affect the noise output.

This is grounded at the operating frequency, but carries a DC potential, normally 10 to 50% of the plate voltage.

They change the side plate voltages from about three hundred to about three hundred and fifty.

Sometimes only the tube heater power was derived from a windmill, and dry batteries were retained for the plate voltage supply.

Like most A.F. amplifiers in radios, the plate voltage is usually less than 60 volts.

It is one of the largest tubes in its class and can handle significantly higher plate voltages than similar tubes, up to 800 volts.

Areas with 220-240 volt AC supplies could develop higher plate voltage with a simple rectifier.

You could dial up number one for plate voltage, maybe two was plate current and maybe three was antenna current.

Higher plate voltage causes the primary electrons to hit the plate with more energy, releasing more secondary electrons.

When a tetrode or pentode is used, the screen grid voltage is usually about one-half the plate voltage.

Vacuum tubes require plate voltages ranging from about 45 volts to 250 volts in electronic devices such as radios.

Tube caps were also used for the plate (anode) connection, particularly in transmitting tubes and tubes using a very high plate voltage.

To avoid unwanted shorts the tube must be operated in a vertical position and the filament preheated for at least 30 seconds before applying the plate voltage.

Modern circuits using semiconductors, or high-gain vacuum tubes with plate voltage as low as 12V, typically operate at milliwatt levels-one thousand times lower.

The advantage was that the heaters were a high and continuous load on the battery, whereas the plate voltage battery drain was smaller and intermittent.

Even when the plate voltage rail is fed by a power supply rather than a battery, it is generally referred to as the "B+" line in American schematics.