An Arduino Nano sets the frequency

An Arduino Nano sets the frequency and pulse width of a UC3525 PWM chip, whose output controls a half-bridge power driver that switches 12 volts across the 5 Volt winding of a scavenged ATX power transformer. The output (around 300 volts) drives the transducer.

The actual power delivered to the sample depends on how close the frequency is to the resonant frequency of the transducer. For off-resonance impedance of 1000 ohms, the delivered power is 84 watts at full modulation. At resonance (25 ohms), the supply will reduce the PWM to limit the output to the rated capacity of the transducer, to a maximum 120 watts.

Kết quả (Anh) 1:

An Arduino Nano sets the frequency and pulse width of a UC3525 PWM chip, whose output controls a half-bridge power driver that switches the 12 volts across the 5 Volt winding of a scavenged ATX power transformer. The output (around 300 volts) drives the transducer.The actual power delivered to the sample depends on how close the frequency is to the resonant frequency of the transducer. For off-resonance impedance of 1000 ohms, the delivered power is 84 watts at full modulation. At resonance (25 ohms), the supply will reduce the PWM to limit the output to the rated capacity of the transducer, to a maximum 120 watts.

Kết quả (Anh) 2:

An Arduino Nano sets the frequency and pulse width of a PWM chip UC3525, có output controls a half-bridge power driver switches 12 volts across mà the 5 Volt winding of a power transformer ATX scavenged. The output (around 300 volts) drives the transducer. The actual power depends on Delivered to the sample frequency is how close the frequency of the Resonant to the transducer. For off-resonance impedance of 1000 ohms, 84 watts is the Delivered power at full modulation. At resonance (25 ohms), the supply will Reduce the PWM to limit the output to the rated capacity at of the transducer, to a maximum of 120 watts.