.. interesting analog design problem is the precision current source. Many good designs are available, but most are the three-wire types that can be used as a positive (see Figure 1) or a negative (Figure 2) polarity source, but not both from ...
.. can deliver up to 2 A of output current when a heatsink is installed on the chip to manage heat dissipation. This converter design, featuring a bifilar-wound common-mode choke with the XL6019 chip, is very likely being shared online for the ...
.. load in an earlier project, Adjustable Load [ 2 ], but unfortunately I had dismantled the prototype, so I decided to design a PCB for a new circuit. Initially I thought of updating the design to use an OLED display, rather than the ...
.. a 1/8 inch hole in the jar lid. Figure 2. Cut ring from PVC pipe fitting. I soldered two wires onto the underside of a 5 volt 160 mA 10 cell 3” × 3” solar panel (Figure 3), then fed them through the hole before gluing the ...
.. loop current. Set input = 20.00 mA. Adjust R2 for 20.00 mA loop current. Done. The input voltage burden is a negative 1.0 volt. The output loop voltage drop is 4 volts minimum to 40 volts maximum. The maximum ambient temperature (with no U1 ... .. Design Idea (DI) offers an alternative solution for an application borrowed from frequent DI contributor R. Jayapal, ...
.. record, and control these process parameters. This equipment will supply 24 VDC to a typical transmitter through one wire and receive current proportional to the process parameter through another wire. Typically, two wires are needed ...
.. value of V IN is required by the regulator, an inexpensive LDO can provide an appropriate U 2 supply. I grant that this design might be overkill, but I wanted to see what might be required to meet the goals I set. But who knows, ...
.. operation, including 3 µA by the undervoltage-lockout, voltage-sensing divider and 17 µA by IC 1 . If your design needs high-temperature operation, note that the gate-current output of IC 1 is relatively limited. Your ...
.. of the meters was used to maintain the measurements for the photograph. The supply for this implementation is a nominal 12-volt “wall wart” salvaged from a defunct router. Figure 2. The test of an MPF4392 N-Channel JFET using the ...
.. part is in shutdown so the resistive divider networks on the UVSET and OVSET pins do not load the input voltage. In this design, the UVSET pin is tied to the TERM pin so the MOSFETs are turned on when the device reaches its minimum ...