Frequency tracking ensures the piezoelectric transducer operates at the resonant frequency for maximum power output, and amplitude control regulates the mechanical motion of the output. This paper presents a novel driver based on a push–pull inverter for piezoelectric transducers. The proposed driver ...
This induces a voltage in the secondary circuit of polarity defined by the point criterion (see Figure 1), which will allow current to flow through one of the branches (through diodes D1 or D2) to the output low-pass filter and the load R. Finally, during mode 3 operation, the ...
where Vo is the average output voltage, Io is the average output current, and fs is the switching frequency. Figure 5. Voltage gain as a function of the duty cycle. One can obtain the theoretical value of the resonant inductance from (2). However, one must also incorporate the leakage ...
Figure 9a shows the small-signal intensity modulation responses of the DPPM-DFB laser, the PPM-DFB laser and the conventional DML at a constant output power of 12 mW. The bias currents 𝐼𝑏Ib for the single-sectional and dual-sectional DFB lasers are 50 mA and 84.5 mA, respectively. ...
The promotion of PPT needs concerted efforts and strong national coordination in solving PPT implementation barriers, such as improving access to input and output markets and animal health services. Keywords: agroecology; climate change; farming system; maize; push–pull technology; resilience; SHARP ...