JPH02149005A - Intelligent power source - Google Patents

Abstract

PURPOSE:To keep operation stable, and to raise the reliability of a device by providing a body voltage control circuit to output a voltage control signal for controlling the voltage of a body power source so that a body current becomes minimum according to the value of the body current detected by a body current detection circuit. CONSTITUTION:The body current detection circuit 5 detects the value of the body current (helix current) to be supplied to an electric tube 1 by the body power source 2. The body voltage control circuit 6 using a microprocessor outputs the voltage control signal 6a for controlling the body voltage (helix voltage) of the body power source 2 so that the body current becomes minimum (i.e. a beam transmission characteristic becomes best) according to the value of the body current detected by the body current detection circuit 5.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a power supply for a power amplifier using an electron tube.

In particular, by monitoring and controlling the body TL flow, an intelligent f
It concerns fts;t.

[Prior Art] In general, in a power supply for a power amplifier using an electron tube, its output voltage and current must be set in accordance with each voltage and current parameter of the electron tube.

And power # using a conventional electron tube! A power supply for a single-width device is designed to initially set its output voltage.

[Problems to be Solved] The output voltage of the conventional IT source for power amplifiers described above is fixed at the initial setting value, so if the beam transmission characteristics of the electron tube become unstable, the operation becomes unstable. Then there was the problem that the protection circuit of the equipment would activate and stop functioning.

As described above, in the conventional power supply, if the operation of the electron tube becomes unstable, the function of the device stops, so there is a problem that the reliability of the device is low.

The present invention has been made in view of the above-mentioned problems.
The aim is to provide an intelligent power supply that can maintain stable operation and increase the reliability of equipment.

[Means for Solving the Problems] In order to achieve the above object, the intelligent power supply of the present invention provides a power supply for a power amplifier using an electron tube.
A body power supply for the electron tube whose voltage changes in response to a voltage control signal, a body current detection circuit that detects the value of the body current supplied to the electron tube by this body power supply, and a body current detection circuit that detects the value of the body current supplied to the electron tube by this body power supply. and a body voltage control circuit that outputs a voltage control signal for controlling the voltage of the body power source so that the body current is minimized according to the body current.

[Example] Hereinafter, an example of the present invention will be described with reference to the drawings.

FIG. 1 is a circuit diagram showing an embodiment of an intelligent power supply according to the present invention.

In the figure, 1 is an electron tube, and 2 is a body power source of the electron tube 1. This body power supply 2 is composed of a variable DC power supply, and its voltage is changed in response to a voltage control signal from a body voltage control circuit, which will be described later.

3 is a collector TrL source for the electron tube I, which is composed of a DC power supply.

Reference numeral 4 designates the heater 1 as a source, which is composed of a DC power source.

Reference numeral 5 denotes a body current detection circuit, which detects the value of the body i'llt current (helix current) supplied to the electron tube l by the body power supply 2.

6 is a body voltage control circuit using a microprocessor. This body voltage control circuit 6 controls the body voltage of the body power supply 2 ( A voltage control signal 6a for controlling the helix voltage) is output.

7.8 is a body voltage detection resistor.

In the intelligent power supply described above, the body current detection circuit 5 detects an increase or decrease in the body current, and the body voltage control circuit 6 controls the voltage control signal 6a to the body power supply 2 so that the body current is always at a minimum. can be controlled within the voltage range of

[Effects of the Invention] As explained above, the present invention has the effect that since the body voltage of the electron tube is controlled so that the body current of the electron tube is always the minimum, the operation can be kept stable and the reliability of the device can be improved. There is.

[Brief explanation of the drawing]

FIG. 1 is a circuit diagram showing an embodiment of an intelligent power supply according to the present invention. 1: M1 slave tube 2: Body power supply 3: Collector river DC power supply 4: DC power supply for heater 5: Body current detection circuit 6: Body voltage control circuit 7.8: Resistor for body voltage detection Agent Patent attorney Ki Watanabe flat

Claims (1)

[Claims] In a power supply for a power amplifier using an electron tube, there is a body power supply for the electron tube whose voltage changes in response to a voltage control signal;
A body current detection circuit that detects the value of body current supplied to the electron tube by this body power supply, and a body current detection circuit that detects the body current supplied to the electron tube by the body current detection circuit, and a body current detection circuit that detects the body current supplied to the electron tube by the body current detection circuit. An intelligent power supply characterized by comprising a body voltage control circuit that outputs a voltage control signal for controlling the voltage of the body.