A piezoelectric ceramic drive amplifier circuit
A voltage amplifier circuit, piezoelectric ceramic technology, applied in the direction of DC-coupled DC amplifier, differential amplifier, etc., can solve the problem of poor flexibility of the drive controller, and achieve the effect of convenient application, strong flexibility and simple structure
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specific Embodiment approach 1
[0011] Specific implementation mode 1. Combination figure 1 and figure 2 Describe this embodiment mode, a kind of driving amplifying circuit of piezoelectric ceramics, described piezoelectric ceramic driving circuit is an operational amplifier from the external interface, it has all interfaces of general operational amplifiers, and it is also equivalent to operational amplifiers in the method of use ; The block diagram of its implementation is as follows figure 1 As shown, it is composed of a differential input circuit, a voltage amplifier circuit and a current amplifier circuit; the differential input circuit is composed of high-precision pair transistors, the voltage amplifier circuit is composed of high-voltage transistors, and the current amplifier circuit is a push-pull current amplifier composed of MOS tubes. The circuit is realized; finally, the series resistor and the piezoelectric ceramic form an RC charging and discharging circuit to supply power to the piezoelectr...
specific Embodiment approach 2
[0016] Specific embodiment two, combine Figure 1 to Figure 5 This implementation mode is described. This implementation mode is an application example of a piezoelectric ceramic driving amplifier circuit described in the first specific implementation mode:
[0017] combine figure 1 and figure 2 , firstly weld the differential input circuit of the circuit, ground the same direction and reverse input terminals; R6 is connected to a 1k resistor, R1 and R2 are connected to a 2k resistor, the measured voltage across the resistor is 1.8V, and the output terminal has a voltage output ;On the basis of the previous step, the voltage amplifying circuit of the welding circuit; the same and reverse input terminals are grounded, and R7 is connected to a 1k resistor; adjust the resistance of R4 so that the resistance of R4 is half of R1; adjust R5 The resistance value makes the voltage across R5 6V. Finally, the third stage of the welding circuit, R10 is a 20 ohm high-power resistor. ...
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