engels systeem

[vogelvrij2]

Dit staat in een bouwplan van een systeem (hobby, geen huiswerk). Voor een groot deel lukt het me de tekst te vertalen, maar omdat er ook begrippen in staan die ik nog niet helemaal begrijp en de tekst daardoor moeilijker wordt, hoop ik dat er hier iemand is die een beetje kan helpen deze engelse tekst beter te doorgronden en, als je nog wat technische begrippenkennis hebt, een beetje helpen met het begrijpen van de hele tekst. ( dit is trouwens een helft van het bouwsysteem: de andere helft begrijp ik wel al.)

Opamp IC1: B is set up as a triangle wave generator and provides the trigger signal for the voltage comparators.The frequency is approximately the inverse of the time constant of R5 and C1-270Hz for the values used. Reducing R5 or C1 will increase the frequency; increasing either will decrease the frequency.

The peak-to-peak output level of the triangle wave is less than the difference between the two voltage references. Therefore it is impossible for both comparators to be triggered simultaneously. Otherwise all four MOSFETs would conduct, causing a short circuit that would destroy them.

The triangle waveform is centered around a DC offset voltage. Raising or lowering the offset voltage changes the DC-position of the triangle wave accordingly. Shifting the triangle wave up causes comparator IC1 to trigger; lowering causes comparator IC: C to trigger. When the voltage level of the triangle wave is between the two voltage references then neither comparator is triggered.

The DC offset voltage is controlled by the potentiometer P1 via IC1: A which is configured as a voltage follower. This provides a low output impedance voltage source, making the DC offset voltage less susceptible to the loading effect of IC: B. As the "pot" is turned the DC offset voltage changes, either up or down depending on the direction the pot is turned. Diode D3 provides reverse polarity protection for the controller. Resistor R15 and capacitor C2 are a simple low pass filter . This is designed to filter out any voltage spikes caused by the MOSFETs as they switch to supply power to the motor.

Alvast heel erg bedankt