Temperature-drift-resistant frequency-stabilized pulse generation electronic chip and voltage regulation chip

Abstract

A temperature-drift-resistant frequency-stabilized pulse generation electronic chip belongs to the technical field of electronics and automobile control and comprises a first transistor, a second transistor, a third transistor, a fourth transistor, a first capacitor, a second capacitor, a first bias resistor and a second bias resistor. The first transistor and the second transistor are geminate transistors to form a first arm, the third transistor and the fourth transistor are geminate transistors to form a second arm, collectors of the first transistor and the second transistor are connectedto form a first arm output end, collectors of the third transistor and the fourth transistor are connected to form a second arm output end, a first bias resistor is serially connected between bases ofthe first transistor and the second transistor, and a second bias resistor is serially connected between the third transistor and the fourth transistor; emitters of the first transistor and the thirdtransistor are connected with a positive electrode of a power supply; emitters of the second transistor and the fourth transistor are connected with the negative electrode of the power supply; the first capacitor is connected with the second arm output end and the first transistor base; the second capacitor is connected with the first arm output end and the fourth transistor base; and due to consistent parameters and offset of temperature drift, the first arm outputs frequency-stable and temperature-resistant first polarity narrow pulses, and the second arm outputs frequency-stable and temperature-resistant second polarity narrow pulses with opposite polarities.

Description

technical field [0001] The invention belongs to the technical field of electronics and automobile control, and in particular relates to a frequency-stabilized pulse generation electronic chip and a voltage regulation chip resistant to temperature drift. Background technique [0002] In a variety of common electronic circuits, a pulse generator is often used, and its frequency is often affected by factors such as temperature. The actual measurement shows that the frequency stability of the general transistor oscillation circuit is poor, such as the common dual-tube multivibrator circuit. The frequency in the range of ~125°C changes by 4 to 10 times, and there are very few chips with dedicated stable frequency output. In addition, conventional transistor oscillating circuits also have the problem that output waveforms often have rounded corners, which limits their application range. [0003] In common transistor oscillator circuits, such as figure 1 As shown, two triodes Q01...

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Problems solved by technology

[0002] In a variety of common electronic circuits, a pulse generator is often used, and its frequency is often affected by factors such as temperature. The actual measurement shows that the frequency stability of the general transistor oscillation circuit is poor, such as the common dual-tube multivibrator circuit. The frequency in the range of ~125°C changes by 4 to 10 times, and there are very few chips with dedicated stable frequency output.

In addition, the conventional transistor oscillator circuit also has the problem that the output waveform often has rounded corners, which limits its application range.

[0003] In common transistor oscillator circuits, such as figure 1 As shown, two triodes Q01, Q02 and R01~R04, C01, C02 form a multivibrator, and the output waveform of the collector of Q01 or Q02 is as follows: figure 2 As shown, it can be seen that there are rounded corners, the waveform is irregular, many occasions cannot meet the design requirements, and the stable output of the duty cycle is difficult to reach the range below 5% or above 95%, so the application of this oscillator is greatly limited.

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