.. are the reference voltage at the feedback (FB) pin multiplied by 1 + R F /R G . Recommended values of C F from 100 pF to 10 nF increase the amount of feedback at higher frequencies, or at least ensure it is not reduced by stray capacitances ...
.. off. Once you release the SS Pin, both ICs start to charge C 14 with their internal 5-µA current sources. In total, 10-µA current flows into C 14 . Once C 14 reaches the threshold voltage of 1.2 V, both controllers start to ...
.. L F P = PWM rep rate N = PWM bits of resolution, N 4 R1 = recommended value from U1 datasheet example application 8. ; 9. ; 10. ; 11. R3 = Vpp/(Vs/R1 + (V L V S )/(R1 + R4)) 11. ; 12. ; 13. ; Now, taking the inexpensive XLsemi XL4016 asynch ...
I recently published a simple design ( Ref. 1 ) for a platinum resistance detector (PRTD) 4 to 20 mA transmitter circuit, illustrated in Figure 1. Figure 1. The PRTD 4 to 20 mA loop transmitter with constant current PRTD excitation that relies on ...
.. trim for a 3.500 V output reading. Finally, set the box to 249.0 Ω (400.00 C) and trim the linearity adjustment for a 10.000 V output. Repeat this sequence until all three points are fixed. Total error over the entire range will be within ...
.. 1. Variable AC power control with a simple pushbutton. When S1 is pushed, counter U1 ramps through the 64 DAC codes in a 2 10 /120Hz = 8.5-second cycle and stops on any selected power setting when S1 is released. Power control method The power ...
.. frequency from 2 MHz to 1 MHz to allow for the 75-ns minimum off time. This would also require increasing L1 to about 10 µH to 15 µH and doubling up on bulk-output capacitor C4 to maintain equivalent performance. References ...
.. was to amplitude-modulate the power output stage of an infrasonic microphone ( Ref. 2 )That gadget generated both the sub-10 Hz baseband signal and an audio tone whose pitch varied linearly with it, allowing one to hear at least a proxy for ...
LEDs need current to illuminate, and current usually flows through a power supply to an LED. A typical LED-driver circuit uses a transistor to provide current and a series resistor to decrease the voltage you apply to the LED. Unfortunately, the ...
.. the mismatch between test parts A and B. The resulting difference signal is boosted by preamp A1d in switchable gains of 1, 10, or 100, synchronously demodulated by U1a, then filtered to DC with a final calibrating gain of 16x by A1c. The key ...