Circuits & Schematics - 2

Search results: 2,925 Output: 11-20
  1. Circuits Analogue Design Oscillators Texas Instruments CD74HC00 CD74HC4538 CD74HC86 TLV9052
    Here is a simple frequency doubler circuit that produces a square wave output with a precise 50 percent duty cycle. There are similar circuits in the literature [References 1, 2, 3] which require adjustments or selection of some components to set ...
    07-09-2022
  2. In advanced IC comparators, programmable hysteresis eliminates 0V-centered differential-input-voltage noise and improves the comparator’s response if its differential-input voltage is low or varies slowly over time. For example, the ADCMP609 ...
    07-09-2022
  3. Thanks to a combination of low initial cost and low on-resistance, a conventional electromechanical relay often makes sense for switching large amounts of load current on and off and when proportional control of the load's current or voltage is ...
    06-09-2022
  4. A fixed-frequency signal generator that can produce outputs simultaneously at multiple phases such as 45 , 90 , 135 , and 180 is sometimes needed for testing multi-channel analog-to-digital converters (ADCs), analog filters, sample/hold circuits, ...
    05-09-2022
  1. A recent Design Idea prompted me to offer the simpler solution that I used in a recent project (Reference 1). We needed a momentary power switch with processor supervision. This supervision would allow the processor to delay a power-down request ...
    01-09-2022
  2. Common designs for touch switches detect a decrease in resistance when a user's fingertip either connects a contact to the circuit's common ground or supplies an injection of 60-Hz ac voltage, resulting from immersion in the electrostatic ...
    31-08-2022
  3. A 4- to 20-mA current loop consists of a power source and a current-measuring device at the control end and a field transmitter that senses process-variable information, such as temperature or pressure, and converts it to a current (Figure 1). Most ...
    25-08-2022
  4. You can remotely measure temperature using a 4- to 20-mA current loop as long as 4000 feet and a battery-powered, white-light LED driver. You usually configure this equipment to provide a programmable, constant current to an LED from a battery ...
    25-08-2022
  5. Among the many methods available for air flow detection, self-heated thermal flow sensors are simple, cheap, rugged, and sensitive. They rely on the relationship between airspeed (V F ) and thermal impedance (Z T = C/W) of a heated sensor as shown ...
    23-08-2022
  6. Circuits sometimes need a gain-of-one buffer to lower output impedance and prevent the load from interfering with the previous stage. For an application involving a 1.5-MHz, low-power transmitter and antenna, a BUF634 buffer IC would work, but a ...
    23-08-2022