Circuits & Schematics: 1 -Wire Barometer - 5/10 Volt Design vrs 2 - 3
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Search results: 1,581 Output: 21-30 Including: 10 (1092); Design (946); Wire (261); Volt (97); Barometer (3); vrs (0).
- .. and R14. The excitation employed comprises alternating-amplitude current-mode signals in the ratio of (almost exactly): 10:1 = (100 µA via R3 and R13):(10 µA via R2 and R14). With this specific 10:1 excitation, most every ...
.. heatsinks, thermoelectric coolers (TECs), and thermal control in electronic assemblies. Figure 1 illustrates an inexpensive design for a high-resolution differential thermometer utilizing the ∆V BE effect to make accurate measurements with ...06-03-2024
- .. DI (see the Figure 1) follows the melded concept but takes it in a somewhat different direction by using fine gauge copper wire (e.g., 40 AWG polyurethane insulated) as an integrated temperature sensor and heater. Figure 1. Miniature ...
.. resistor R1 produces: (8) FET control amplifer A1a forces FET gate voltage and thereby R drive current such that: (9) (10) (11) Thus, heater current, and therefore wire resistance and temperature, are forced to equilibrium values set ...
.. are based on separate temperature sensor and heater devices with means for feedback between them. But in some recent EDN design ideas (DIs) we’ve seen thermostat designs that meld the functions of sensor and heater into a single ...04-03-2024
- .. at dc. At frequencies in the power-line range of 50 to 300 Hz, the circuit's ac impedance averages approximately 10 kΩ, or 1000 times less than a typical shunt-resistance IVC's input resistance of approximately 10 MΩ. ...
.. an unknown current from a feedback current and delivers an output voltage proportional to the unknown current In this design, the input's dc resistance consists mostly of R 2 and IC 1 ’s effective input resistance, or ...22-02-2024 - .. inactive state, both the upper and the lower transistors in Figure 2 are in the off state because of the presence of the 10-kΩ resistors. The thyristor structure connects between the feedback pin, FB, and ground. One feature of the ...
.. that's higher than ambient by a few tens of degrees. To overcome this problem, you can implement a thermistor-based design, but this solution compromises the system's cost. Fortunately, you can use standard bipolar transistors ...21-02-2024 - .. can use two simple bipolar transistors to latch-off the whole SMPS in the case of an optocoupler failure (Figure 3a). You wire the bipolars in a thyristor manner using a dual-transistor device, such as the MBT3946D . a) b) Figure 3. You can ...20-02-2024
- .. 1. The 12-V downswitcher, which is already in the design, provides a square-wave to generate VeeDrive from V12 with about a 10-V swing. To guarantee a solid drive for the charge pump, power is derived directly from the 12-V supply and ground ...
.. 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 ...14-02-2024 - .. frequency is roughly 100 kHz under control of the U1c Schmidt trigger style oscillator, so that a transfer occurs every 10 µs. Note the positive feedback around U1c via R3 and inverse feedback via R4, R5, and C1. Figure 2 shows ...
.. 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 ...09-02-2024 - .. 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 ...05-02-2024
- .. The time constants R 3 C 1 and R 4 C 2 set the output-pulse width. A 100-kΩ/100-pF combination, for example, produces 10-usec pulses. You select a value for pullup resistors R 1 and R 2 from the, 10- to 100-kΩ range, according to ...01-02-2024
- .. and produces more than 0.39 V on 910 Ω load. The very first circuit ( Ref. 2 ) with the same output current consumes about 10 times more power, but its output noise is about 100 times less. With all these circuits there may be one problem ...31-01-2024
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