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

91. Multiple power supplies fortify high-side gate control
    Steven Hendrix
    Circuits Supply Microchip MIC4680
    .. transition. Instead, transistors Q610 and Q611 are simple source-followers. As the gate voltage rises more than about a volt above the present value of net VeeDrive shown in Figure 1 at the source terminals of Q610 and Q611, Q611 turns ...
    .. a recent design project, a robust power supply was needed to control the gates of high-side FETs. Optocouplers readily ...
    Feb 14, 2024

92. "Sub-zero" op-amp regulates charge pump inverter
    Stephen Woodward
    Circuits Analogue Design Supply Texas Instruments TLV9064
    .. op-amp outputs “live” and below zero volts is a job where a few milliamps and volts (or even fractions of one volt) of regulated negative rail can be key to achieving accurate analog performance. The need for voltage regulation ...
    Feb 9, 2024

93. ±5V converter uses off-the-shelf surface mount coil
    Kevin Vasconcelos Mitchell Lee
    Circuits Supply Linear Technology LT1176
    .. is ostensibly a buck converter to provide a 5 V output. The optimum solution would be a bifilar wound coil with heavy gauge wire for the main 5 V output and smaller wire for the overwinding. To avoid a custom coil design, an off-the-shelf ...
    Feb 5, 2024
94. Using an inductor to improve an existing design
    Peter Demchenko
    Circuits Supply Analog Devices ADR444
    Here is the circuit in Figure 1 from a previous DI ( Ref. 1 ): Figure 1. Simple local low-noise voltage converter that can be used when a simple negative supply of low voltage is required. It is simple, and its efficiency can be improved by a very ...
    Jan 31, 2024
95. RLD-based astable 555 timer circuit
    Arthur Edang Maria Lourdes Lacanilao-Edang
    Circuits Oscillators Texas Instruments LM555CN
    .. , and measurements for V O . References Arthur Edang. “Inductor-based astable 555 timer circuit.“ Phil Rogers. Design low-duty-cycle timer circuits. Materials on the topic Datasheet Texas Instruments LM555CN/NOPB
    Jan 26, 2024
96. Control a processor's power supply in real time
    Yogesh Sharma
    Circuits Supply Microcontrollers Usage Analog Devices AD5258 ADP3051
    .. IC 1 ’s feedback input rests at 0.8 V, and IC 2 and R 2 form a voltage divider. The ADSP-BF531 imposes several design requirements: Its core power-supply voltage must maintain its accuracy to within 25 mV and offer an ...
    Jan 25, 2024
97. More gated 555 astable multivibrators hit the ground running
    Stephen Woodward
    Circuits Oscillators Texas Instruments LM555 LMC555
    .. previous Design Idea “Gated 555 astable hits the ground running” ( Ref. 1 ) offered a fix for the problem of the ...
    Jan 23, 2024
98. Simple log-scale audio meter
    Nick Cornford
    Circuits Audio Measurement Texas Instruments TL081
    .. log of the input signal. Positive input half-cycles cause it to clamp low at V F , which we ignore, as this is a half-wave design; for negative ones, it swings high by 2V F . Driving that 2V F through another diode into the capacitor ...
    Jan 22, 2024
99. Gated 555 astable hits the ground running
    Stephen Woodward
    Circuits Oscillators Texas Instruments LMC555 SN74HC04
    .. comparable to a 74HC04. Figure 5. A buffer may be necessary to provide a full voltage excursion RESET signal. Oscillator design equations are unchanged from the usual 555 datasheet math, except that the timing capacitance used should be ...
    Jan 18, 2024
100. A simple, accurate, and efficient charge pump voltage inverter for $1 (in singles)
     Stephen Woodward
     Circuits Supply Texas Instruments CD4053B
     .. at and below zero volts, generating symmetrical output signals, and processing bipolar analog inputs, are all examples of design situations where a few milliamps of negative voltage rail can be a necessity. Figure 1 shows a simple ...
     Jan 10, 2024

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