Circuits & Schematics: -Wire Barometer 5/10 Volt Design vrs - 3

21. Ignoring the regulator's reference redux
    Christopher Paul
    Circuits Analogue Design Supply Texas Instruments OPA2383 REF35 SN74AC04 TLV9151
    .. R 4 in response to an input change. V OUT now settles to ½ LSbit of a 16-bit source in 2.5 ms. Changing C 3 to 510 pF (10% COG/NPO) reduces that time to 1.4 ms. Smaller values of C 3 provide little further advantage. The V OUT ...
    .. the output of A1 react to this while driving a hypothetical U1, which is capable of producing an anomaly-free ( Ref. 4 ) 0-volt output. Figure 3. V OUT and A1’s output from Figure 1 react to a step change in V DAC . Even though V OUT ...
    .. Woodward’s “Ignoring the regulator’s reference” ( Ref. 1 ) Design Ideas (DI) (see Figure 1) is an excellent, working example of how to include a circuit in the feedback loop ...
    Jan 21, 2026

22. SCR topology transmogrifies into BJT two-wire precision current source
    Stephen Woodward
    Circuits Supply Fairchild LM317
    .. frequent Design Idea (DI) author Christopher Paul showcased an innovative and high performance true-two-wire current source using a depletion mode MOSFET as the pass device in “A precision, voltage-compliant current ...
    Jan 15, 2026
23. Tuneful track-tracing
    Nick Cornford
    Circuits Measurement Printed Circuit Boards (PCB) Microchip MCP6002
    .. be an overstatement, but just like the original PLVCO, this can be used to play tunes! A length of suitable resistance wire stretched between a couple of drawing pins should be a good start now, where’s that half-dead wire-wound ...
    .. being generated by Q4/C3/R13. (For more informative details of the circuit’s general operation, see the original Design Idea [ 1 ].) The ’scope traces in Figure 2 should clarify matters. Figure 2. Waveforms within the ...
    Jan 12, 2026
24. Simple speedy single-slope ADC
    Stephen Woodward
    Circuits Measurement Microcontrollers Usage Texas Instruments LM4041N TS5A3160
    .. and taken as its digital conversion. We recently saw an example contributed by Dr. Jordan Dimitrov to our own friendly Design Idea (DI) corner in “Voltage-to-period converter offers high linearity and fast operation” ( Ref. ...
    Jan 12, 2026
25. Ignoring the regulator's reference
    Stephen Woodward
    Circuits Supply Texas Instruments TLV9151
    .. control (via PWM or other source) of regulators is a popular design topic here in editor Aalyia Shaukat’s Design Ideas (DIs) corner. There’s even a special aspect of ...
    Dec 24, 2025
26. Read isolated digital signals without power drain
    Alfredo Saab
    Circuits Measurement Digital Texas Instruments MAX5048 MAX913
    .. circuit, if carefully built, is determined by T 2 's interwinding capacitance. Using the core specified, plus 24-gauge wire with Teflon insulation, the resultant interwinding capacitance is less than 0.2 pF. Acquisition delay from the ...
    .. voltage for the isolation barrier depends on the type of insulation used in the single-turn windings and in PC-board design and construction. Teflon or Kapton insulation, for example, allows a barrier voltage of several kilovolts. ...
    Dec 24, 2025
27. Two-wire precision current source with wide current range
    Stephen Woodward
    Circuits Analogue Design Supply Analog Devices LM4041
    .. 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 ...
    Dec 18, 2025
28. Buck boost converter using XL6019 (bifilar choke)
    Hesam Moshiri
    Circuits Supply XLSemi XL6019
    .. 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 ...
    Dec 16, 2025
29. Adjustable load
    David Johnson-Davies
    Circuits Measurement Supply Microcontrollers Usage Microchip ATtiny84A
    .. 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 ...
    Dec 14, 2025
30. Solar mason jar light
    David A. Johnson
    Circuits Supply Light Solar Toshiba TC4S584F
    .. 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 ...
    Dec 10, 2025

Sort by: relevance / date