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Search results: 152   Output: 1-10
  1. Kannan N Electronic Design Many products require an auxiliary dc output to power external devices or subsystems. If such subsystems are to be hot-connected, the auxiliary output must be protected against short circuits. Schemes using fuses are slow ...
    27-04-2018
  2. Robert H. Russell Electronic Design I needed a simple LED indicator showing that a particular voltage level had been reached specifically, that a capacitor had charged to a particular potential. I was convinced that there must be a way that a ...
    17-04-2018
  3. Jayashree Raghuraman EDN The novel logarithmic amplifier in Figure 1 relies on the exponential charging characteristics of a simple RC circuit. The expression for the time, T, required for a capacitor, C, to reach a voltage (V IN V K ) from 0 V, ...
    10-04-2018
  4. Michele Costantino EDN This Design Idea describes a simple and effective way to provide optoisolation for devices connected on the I 2 C bus (Figure 1). It improves on an earlier version (Reference 1). SDA and SCL are on the bus master’s side ...
    Circuits » Analogue Design · Interfaces » ON Semiconductor » FDV302P, HCPL0600
    10-04-2018
  5. Alex Birkett EDN Traditional current sources and voltage-to-current converters based on instrumentation and operational amplifiers offer high output impedances at low frequencies because of the amplifiers' good low-frequency CMRR ...
    Circuits » Analogue Design » Analog Devices » AD8066, AD8065, AD8129, AD8130
    02-04-2018
  6. Jim Tonne Electronic Design With a handful of low-leakage passive components and two high-impedance op amps, you can build a sine/square-wave generator with output period of a minute and more. The circuit of Figure 1 generates sinusoids down to ...
    02-04-2018
  7. by John Ardizzoni, Analog Devices Eelctronic Design Europe In consumer electronics applications, which tend to be lower in frequency and less demanding than typical clock-buffering applications, inexpensive high-speed op amps (~100-MHz bandwidth) ...
    Circuits » Analogue Design » Analog Devices » AD8057, AD8061
    02-04-2018
  8. Tom Bruhns EDN The novelty circuit in Figure 1 illustrates the extremely low gate-leakage current typical of modern power MOSFETs. You can find parts that, in a moderately dry environment, will hold their state for days at a time. In operation, if ...
    Circuits » Analogue Design » Vishay » IRF530, SI4490DY
    11-03-2018
  9. Sundaresan Sundararaj Electronic Design This idea describes a white-LED (WLED) driver circuit controlled by a simple ambient light sensor (ALS). A typical application would be a brightness control for cell-phone backlighting. On a very sunny day, ...
    11-03-2018
  10. Jean-Bernard Guiot EDN Controlling a small dc motor without speed control sounds like a trivial task; a switch or a relay should suffice. However, several problems accompany this approach. For one, the switch, because of the inductive load and the ...
    03-03-2018
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