Circuits & Schematics - 8

Search results: 2,602 Output: 71-80
  1. Stephen Woodward EDN Most engineers know about the solid-state refrigerators called Peltier devices or, more commonly, TECs (thermoelectric coolers) and how they can actively cool temperature-sensitive electronic components, such as optical ...
    03-12-2019
  2. Robert M. Hanrahan Electronic Design With digital semiconductor technology driving system power supplies to lower voltages for higher performance and lower system power, sensitive analog sensor circuits face a growing problem. Much of the inherent ...
    08-11-2019
  3. Alan Erzinger EDN Most object-sensing systemshave problems detecting the presence of an object. The system in Figure 1 uses an oscillator to ease detection problems and allow sorting. The oscillator reduces power dissipation in the photodiode by ...
    08-11-2019
  4. T A Babu EDN This flasher/beacon circuit can be employed as a distress signal on highways, a direction pointer for parking lots, hospitals, and hotels, etc. The circuit uses a power LED, and provides more light than a typical incandescent lamp ...
    02-11-2019
  1. Michele Frantisek EDN The voltage-to-current (V/I) converter in Figure 1 uses three common op amps, two medium-power transistors, and only a few passive components. The first op amp (IC 1 ) inverts the sum of voltages V IN and V OUT to V 1 = (V IN ...
    02-11-2019
  2. Anthony Smith EDN Converting band-limited NRZ (non-return-to-zero) data to a digital format suitable for microprocessors and other digital systems poses problems when a signal's duty cycle or amplitude varies or when its average level ...
    29-10-2019
  3. Wenwei Li, Analog Devices Design Note The LTC4126 is a full-featured 7.5 mA wireless lithium-ion (Li-Ion) battery charger with a 1.2 V inductorless dc-to-dc converter designed for hearing aids, wireless headsets, and other space-constrained ...
    22-10-2019
  4. Stephen Woodward EDN In theory, the design of current sensing circuitry, typically based on simple measurement of the IR voltage developed across a resistor placed in series with the current to be sensed, looks like an easy task. In theory. But in ...
    20-10-2019
  5. Victor Khasiev, Analog Devices Design Note Introduction A 2-quadrant power supply one that provides a positive or negative voltage to the same output terminals can easily be produced using the LT8714 4-quadrant controller. The 2-quadrant supply ...
    14-10-2019
  6. Circuits Security Digital Texas Instruments CD4017B CD4019B CD4072B CD4093B CD4538BC
    Maxwell Strange EDN Figure 1 is the block diagram of an easily programmed, single-button combination lock. You operate the lock by using a series of short and long pulses from a momentary switch that masquerades as a doorbell button. The circuit ...
    03-10-2019