Circuits & Schematics: -Wire Barometer 5/10 Volt Design vrs - 8

71. 85V-260VAC to 5VDC-2.5A flyback switching power supply
    Hesam Moshiri
    Circuits Supply Dongke Semiconductor DK1203
    .. First, prepare these materials: Core: ferrite, EE-20-10-6 (B66311G0000X187) Primary winding: 2.88 mH (124 turns of 0.2 mm wire) Gap: around 0.25 mm (mathematically) Secondary winding: 6 turns of 2×0.7 mm wires (two 0.7 mm wires in ...
    .. to perform all tests. I am confident that building this circuit enhances your knowledge regarding switching power supply design, except for using it for real applications. Specifications Input voltage: 85-265 VAC Output voltage: 5 VDC ...
    May 7, 2024

72. Drive a blue LED from a 3V battery
    Sergi Sánchez
    Circuits Supply Light ON Semiconductor NCP1729
    .. pose problems when available power-supply voltages don't meet or exceed the LED's 3 V forward-voltage drop. This Design Idea shows how to drive a blue LED from a 3 V battery or another power supply. The circuit in Figure 1 uses ...
    May 3, 2024

73. A groovy apparatus for calibrating miniature high sensitivity anemometers
    Stephen Woodward
    Circuits Measurement
    .. are an important category of environmental sensor. Articles about their design, data capture, and linearization have comprised topics featured in EDN Design Ideas, several quite recently. ...
    May 1, 2024
74. How to build an isolated digital AC dimmer using Arduino
    Hesam Moshiri
    Circuits Arduino Supply NXP BT138-800
    .. and your specific needs. Figure 7. The output waveform in 50% of the power (dim = 5000). References RC snubber circuit design for TRIACs Downloads Gerber files Materials on the topic Datasheet NXP BT138-800 Datasheet ON Semiconductor ...
    Apr 26, 2024
75. Efficient digitally regulated bipolar voltage rail booster
    Stephen Woodward
    Circuits Analogue Design Supply onsemi MC74AC132
    .. amplifier saturation in systems supplied with only a single logic-level power rail has been receiving a lot of activity and design creativity recently. Voltage inverters generating negative rails for keeping RRIO amplifier output circuitry ...
    Apr 26, 2024
76. Automotive link uses single wire
    Anthony Smith
    Circuits Automotive Interfaces
    .. industry, in which the goal is to produce cars with simpler, lighter wiring looms, any interface that uses just one wire instead of two offers a distinct advantage. The circuit in Figure 1 implements a bidirectional link using a ...
    Apr 23, 2024
77. How to make a noise-free infrared obstacle detection module
    Hesam Moshiri
    Circuits Measurement Robots Vishay TSOP1738KA1
    .. PCB board mostly designed by SMD components which only take a small 3.2 cm × 1.8 cm board size. Figure 2. PCB board design of the IR obstacle detection circuit. As you can see on the PCB silkscreen, you must install an isolation ...
    Apr 17, 2024
78. Single phase mains cycle skipping controller sans harmonics
    Jayapal Ramalingam
    Circuits Supply Diodes NE555
    .. this controller skips a certain number of power cycles in between, to vary power to the heaters. In this typical design, 10 full cycles are taken as base. Timer U3 (555) through R2, R4, and C1 decides this by giving output pulses ...
    Apr 15, 2024
79. 15-bit voltage-to-time ADC for "Proper Function" anemometer linearization
    Stephen Woodward
    Circuits Measurement Signal Processing, Filters Texas Instruments LMC555
    .. back I published a simple design idea for a thermal airspeed sensor based on a self-heated Darlington transistor pair (Ref, 1). The resulting ...
    Apr 4, 2024
80. Virtual-zener circuit simplifies high-voltage interface
    Philip Lane
    Circuits High Voltage Signal Processing, Filters Analog Devices LT1021
    .. design for a photonic switch needs more than approximately 70 V at the cathode of a duo-lateral optical ...
    Apr 1, 2024

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