.. of the square wave output voltage to the triangle voltage over C, which rises in frequency, is described in my recent Design Idea (DI), “Wide-range tunable RC Schmitt trigger oscillator” ( Ref. 2 ). There, I use a ...
.. 1 ) used the LM337 regulator in a novel circuit arrangement to translate an input 0-20 mA current source into a 4-20 mA two-wire transmitter current loop (a standard two-terminal industrial current source). The circuit can also be flipped ... .. 3296 types or similar, but single-turn trimmers may also work fairly well, as both pots have a small trim range by design. The di/dV, current stability, and ease of trimming are excellent. Input to output linearity of the basic ...
.. programming interface for the microcontroller (GND-RST-MISO-MOSI-SCK). PCB layout Figure 2 shows the PCB layout of the design. It’s a two-layer PCB board and contains a mixture of SMD and through-hole components. Figure 2. PCB ...
.. The current return side of B consists of the (approximately) known resistance (44 mΩ) of a 41-inch length of 24 AWG copper wire. The resulting 44 mΩ × 0.05 A = ~2 mV drop provides a null reference for the A1a voltage to current ... .. frequent and favorite contributor Nick Cornford gave us a cool and novel acoustic-interface design for a super sub-ohmmeter capable of audibly sniffing out defects in PWBs: “Tuneful track-tracing” ...
.. contributor R. Jayapal recently shared an interesting Design Idea (DI) for power supply control and sequencing in MCU-based applications that combine analog and digital ...
.. U 2A . The comparator’s other input’s voltage causes its output to transition low when the sawtooth rises to 1 volt. U 2A , R 1 , Q 1 , R 8 , C 1 , and U 2B produce a 100 ns one-shot signal at the output of U 2B , which drives ...
.. topic that has recently drawn a lot of interest (!) and no fewer than four separate design articles (!!) here in Design Ideas, is the conversion of 0 to 20 mA current sources into industrial standard ...
.. mA current source (say from a sensor with a separate power source that outputs a 0-20 mA signal current) into a 4-20 mA two-wire transmitter current loop (a standard 2 terminal industrial current source). Below is another novel, ‘silly ... .. recent Design Idea (DI), “Silly simple precision 0/20 mA to 4/20 mA converter,” ( Ref. 1 ) by prolific DI ...
.. waveforms (simulation) of the C2 capacitor. Figure 3. Voltage and current waveforms of C2 (simulation). AL17150 buck design tool The chip man µFacturer (Diodes Incorporated) has introduced an interesting and helpful Microsoft ...