Current-feedback magnetic multivibrators are widely used as power sources for electronic equipment, because they are highly efficient and reliable. However, these circuits have no ability to protect themselves from overloading, and the oscillation frequency changes according to the load current. In this paper, we propose a new current-feedback multivibrator with overload protection and frequency compensation. In addition, the condition for cessation of oscillation and that for fixed frequency of oscillation are derived by analysis. These conditions can be determined independently of each other.

Overload-protected frequency-compensated current-feedback magnetic multivibrator

Current-feedback magnetic multivibrators are widely used as power sources for electronic equipment, because they are highly efficient and reliable. However, these circuits have no ability to protect themselves from overloading, and the oscillation frequency changes according to the load current. In this paper, we propose a new current-feed-back multivibrator with overload protection and frequency compensation. In addition, the condition for cessation of oscillation and that for fixed frequency of oscillation are derived by analysis. These conditions can be determined independently of each other.

Overload-Protected Frequency-Compensated Current-Fed Multivibrator

The current-feedback magnetic multivibrator (Wilson-Moore circuit) is highly efficient and the number of components is extremely small. However, this circuit has no ability of overload protection and the frequency of oscillation depends much on the load current. So, we proposed an improved current-feedback magnetic multivibrator with overload protection and frequency compensation. In this paper, steady-state characteristics of this circuit are investigated in detail.

https://ieeexplore.ieee.org/iel3/5036/13809/00638391.pdf

Steady-state characteristics of an overload-protected frequency compensated current-feedback magnetic multivibrator

A detailed analysis is presented of our original overload-protected frequency-compensated current-feedback magnetic multivibrator. Current-feedback magnetic multivibrators are highly efficient and are suitable for high-frequency operation. However, these circuits have no ability to protect themselves from overloading, and the oscillation frequency varies according to the load current. We therefore proposed a new current-feedback multivibrator with overload protection and frequency compensation. In this paper, the condition for cessation of oscillation and that for fixed frequency of oscillation are derived by using our model of bipolar junction transistors. This model takes account of power dissipation, because the common-emitter static forward current transfer ratio and the junction voltage depend on the junction temperature.

Analysis of an overload-protected frequency-compensated current-feedback magnetic multivibrator

Current-feedback magnetic multivibrators are highly efficient and reliable. However, these circuits have no ability to protect themselves from overloading, and the oscillation frequency changes with the load current. We previously proposed an improved multivibrator with overload protection and frequency compensation. In this paper, the condition for cessation of oscillation and that for fixed frequency of oscillation are derived by using our model of bipolar junction transistors. This model takes account of power dissipation, because the common-emitter static forward current transfer ratio and the junction voltages depend on the junction temperature.

Analysis of an Overload-Protected Frequency-Compensated Current-Feedback Magnetic Multivibrator Taking Account of Power Dissipation in Semiconductor Devices.

A detailed analysis is presented of our original overload-protected current-feedback magnetic multivibrator. Since current-feedback magnetic multivibrators are highly efficient and are suitable for high-frequency operation, they are widely used as power sources for electronic equipment. Unlike voltage-feedback multivibrators, however, their circuits have no ability to protect themselves from overloading. We therefore proposed a new current-feedback multivibrator with overload protection. In this paper, the conditions for cessation of oscillation are derived by using our model of bipolar junction transistors. This model takes account of power dissipation, because the common-emitter static forward current transfer ratio depends on the collector current and the junction temperature.

Analysis of an overload-protected current-feedback magnetic multivibrator

A detailed analysis is presented of our original overloadprotected current-feedback magnetic multivibrator. Since current-feedback magnetic multivibrators are highly efficient and are suitable for high-frequency operation, they are widely used as power sources for electronic equipment. Unlike voltage-feedback magnetic multivibrators, however, their circuits have no ability to protect themselves from overloading. We therefore proposed a new current-feedback multivibrator with overload protection. In this paper, the conditions for cessation of oscillation are derived by using our model of bipolar junction transistors. This model takes account of power dissipation, because the commonemitter static forward current transfer ratio depends on the collector current and the junction temperature.

M. Ouchiyama

Papers

Analysis of an overload-protected current-feedback magnetic multivibrator

Overload-protected frequency-compensated current-feedback magnetic multivibrator

Analysis of an Overload-Protected Current-Fed Magnetic Multivibrator.

Overload-Protected Frequency-Compensated Current-Fed Multivibrator

Analysis of an overload-protected frequency-compensated current-feedback magnetic multivibrator