Voltage reference - Circuitos electrónicos

48 V ?phantom? powering has become the standard for professional condenser microphones. The supply (or rather bias) voltage is applied over both wires of the balanced screened cable via two 6k8 resistors (see reference [1]) the absolute value is not critical, since a variation of ±20% is permitted, but they must be matched to an accuracy of 0. 4% or better [2]. Many microphones are fitted with an output transformer, and derive their power from a center-tap on the secondary........

http://www.hobby-circuits.com/circuits/power-supply/dc-power-supply/875/48v-phantom-microphone-power-supply

This is versatile development board for AVR microcontrollers ATmega48/88/168. It is good for testing and debugging embedded programs. It has many built-in peripheries connected to microcontroller so you can use them without soldering. ATmega microcontrollers are produced by ATMEL and they include a lot of features: I/O, Timers, PWM generato.......

https://diy4fun.blogspot.com/2008/04/atmega4888168-development-board.html

Closed Loop Brushless DC Motor Control CircuitBrushless DC Motor ControllerThe MC33035 is a high performance second generation monolithicbrushless DC motor controller containing all of the active functionsrequired to implement a full featured open loop, three or four phasemotor control system. This device consists of a rotor position decoderfor proper commutation sequencing, temperature compensatedreference capable of supplying sensor power, frequencyprogrammable sawtooth oscillator, three open .......

https://basicelectronic.blogspot.com/2009/06/brushless-dc-motor-driver-circuit.html

The TPS63710 is an inverting step-down dc-dc converter generating a negative output voltage down to -5.5 V. It provides an output current up to 1 A, depending on the input-voltage to output-voltage ratio. Its filtered reference system gives low 1/f noise which is required in high performance telecommunication systems.The... The TPS63710 is an inverting step-down dc-dc converter generating a negative output voltage down to -5.5 V. It provides an output current up to 1 A, depending on the .......

http://www.ti.com/product/tps63710

This circuit is also found in DC Magazine. The circuit that I came up with is shown below.  It uses 5 identical circuits.  Each one is wired in parallel with it assigned 650F super capacitor.  A LM385 provides a 1.2v voltage reference.  A resistor divider measures the voltage across the capacitor and feeds the voltage to a low power, low voltage op Amp..........

http://www.discovercircuits.com/DJ-Circuits/Vertical Lifting Gate.htm

The UK site Electronics Notes recently posted a helpful tutorial about PLLs (Phase-Locked Loops). Phase locked loops are used in many RF systems: radios, as FM detectors as well as within frequency synthesizers that form the local oscillator in radio receivers. Here's a video introduction to their design and use. PLLs are a key electronics building block for "locking" on.......

https://saeligcoinc.blogspot.com/2016/11/phase-locked-loop-tutorial-pll-basics.html

Monster 45min Mailbag! Forum HERE SPOILERS: The Current Source Channel Analog meters + VTVM?s + Dave?s first multimeter. Laser Cut Parts Images Of Silicon Valley BOOK Brady label maker teardown SushiBits M193v2 Arduino PCB 2DW233 Voltage Reference Zener Fitbit Teardown i-Extruder Solder Paste Dispenser: https://www.i-extruder.com/en/ University of Bristol UB20M Zero Power Standby chip Silego Reset ... Monster 45min Mailbag! Forum HERE SPOILERS: The Current Source Channel Analog meters + VTVM?s +.......

https://www.eevblog.com/2017/08/07/eevblog-1013-mailbag

This simple LED tester consists of a current source with a potentiometer that can be used to adjust the current. The current source is implemented using a type TL081 opamp. The output current of the opamp flows through the diode and R2. The voltage drop across R2 is fed back to the inverting input and compared with the reference voltage, which is set with R1 and applied to the non-inverting input........

http://www.circuit-finder.com/categories/tools-and-measuring/component-tester/911/a-very-simple-led-tester

This resistance meter can measure resistances up to 200 mega-ohms. The value of the resistance is indicated on a linear meter scale (0-100 uA). The operation of the circuit is based on sensing the voltage drop across a reference resistor. The voltage sensing IC used here is a CMOS NAND gate (CD4011) whose high impedance [ ... ].......

http://electronicsforu.com/electronics-projects/high-resistance-meter

Measure up to 128 strain gauges, balanced bridges like pressure transducers or voltages over USB. When a bridge input is selected the Windmill Software automatically monitors excitation voltage and performs the bridge calculation to produce a reading in microstrain. This eliminates errors due to changes in excitation voltage. You can also set a zero reference level and monitor changes relative to that level........

https://windmillsoft.com/daqshop/strain-measurement.html

TL/H/12893 LM56 Dual Output Low Power Thermostat November 1996 LM56 Dual Output Low Power Thermostat General Description The LM56 is a precision low power thermostat. Two stable temperature trip points (V T1 and V T2 ) are generated by di- viding down the LM56 1.250V bandgap voltage reference using 3 external resistors. The LM56 has.......

https://fotoelectronica.jimdofree.com/app/download/7158913876/LM56.-+Sensor+de+temperatura.pdf?t=1395091546

TL/H/12893 LM56 Dual Output Low Power Thermostat November 1996 LM56 Dual Output Low Power Thermostat General Description The LM56 is a precision low power thermostat. Two stable temperature trip points (V T1 and V T2 ) are generated by di- viding down the LM56 1.250V bandgap voltage reference using 3 external resistors. The LM56 has.......

http://www.fotoelectronica.jimdo.com/app/download/7158913876/LM56.-+Sensor+de+temperatura.pdf?t=1395091546

December, 2016  Rev. 24 MC34063A, MC33063A, Inverting Switching The MC34063A Series is a monolithic control circuit containing the primary functions required for DCtoDC converters. These devices consist of an [. . . . . ]

http://www.onsemi.com/pub/Collateral/MC34063A-D.PDF

CS5525 CS5526 16-bit/20-bit, Multi-range ADC with 4-bit Latch Features Delta-sigma A/D Converter - Linearity Error: 0. 0015%FS - Noise-free Resolution: 18-bits General Description The 16-bit CS5525 and the 20-bit CS5526 are [. . . . . ]

http://www.cirrus.com/en/pubs/proDatasheet/CS5525-26_F5.pdf

ABCs of ADCs Analog-to-Digital Converter Basics Nicholas Gray Data Conversion Systems Staff Applications Engineer November 24, 2003 Corrected August 13, 2004 Additional Corrections June 27, 2006 ABCs of ADCs [. . . . . ]

http://catedra.ing.unlp.edu.ar/electrotecnia/islyd/ABCs_of_ADCs.pdf