A Universal Magnetic Latch RF Relay Drive Circuit and Its Design Method

Abstract

The invention discloses a general magnetic latch radio frequency relay drive circuit and a design method thereof, belonging to the field of microelectronics. The drive circuit design of the present invention is all constructed of discrete components, and the circuit structure is simple and clear. By adjusting the RC circuit parameters at the input end of the control signal, the duration of the drive current can be adjusted, which has versatility; when the control signal is switched, 1 The root control signal generates drive currents in two different paths through the reverse connection of two polar capacitors in the two paths and the switching characteristics of the triode, thereby completing the switching action of different states of the relay; in the circuit design of the triode and the power supply circuit of the relay A diode is introduced in the design to protect the circuit and enhance the stability of the circuit.

Description

technical field [0001] The invention belongs to the field of microelectronics, and in particular relates to a general magnetic latch radio frequency relay driving circuit and a design method thereof. Background technique [0002] With the continuous development of microelectronics technology, especially electronic devices, the power consumption requirements of the matching relays are smaller. Especially for relays used in artificial satellites, aerospace and other equipment, not only are they required to be small in size, light in weight, and reliable in operation, but more importantly, their power consumption must be small. Due to the rapid development of magnetic devices in the direction of miniaturization, as a small relay - magnetic latch relay has also been more widely used. [0003] The switching action of the magnetic latch relay is driven by a pulse signal, and it remains in a certain position for a long time without power consumption. Aiming at the current complic...

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Problems solved by technology

[0005] In the existing drive circuit scheme, it can drive magnetic latch relays with high voltage and high current requirements. However, due to its complex structure, high cost, and high power consumption, it requires two control signals and requires the control signal to have a certain pulse width, so it is not suitable for the requirements of the magnetic latch RF relay on the driving circuit

[0006] The existing magnetic latch relay drive circuit needs 2 control signals and different types of relays have certain requirements on the pulse width of the signal, and the control circuit has relatively high requirements; the drive circuit uses an integrated chip to increase the drive capability, compared with discrete components As far as the cost is high, the integrated circuits used are produced by foreign manufacturers and lack complete independent research and development; the driving signal generated by the power drive circuit has high voltage and large current, which increases the power consumption of the entire circuit; the main circuit of the relay H bridge The form is complex, and many devices are used, which increases the cost of research and development

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