Circuits & Schematics: Design - 9

81. Operate circuits at voltages as high as 540V ac
    Circuits Supply STMicroelectronics STP4NK50Z
    .. input voltage can be as high as 540 V ac. The challenge increases if the power supply must operate from 100 to 540 V ac. Design choices are numerous, and final system costs can vary dramatically with those choices. An abundance of parts ...
    05-06-2023

82. Topology implements updated version of non-isolated capacitive power converter
    Circuits Supply Linear Technology LTC1046
    .. charge pump), which converts the power in the opposite direction, from minus node to plus node. In the well-known design of a capacitive power supply, capacitor C2 accommodates the ac mains voltage to a voltage level suitable for ...
    02-06-2023

83. Circuit precludes common-mode conduction
    Circuits Power Digital Texas Instruments SN74HC14
    .. lowers EMI (electromagnetic interference). Crossover-delay circuits solve that problem. Figure 1 shows a simple, two-phase design that lets you adjust the crossover delays equally by changing the value of one component with minimal phase ...
    02-06-2023
84. Designing a wideband analog voltage and current meter. Part 2
    Circuits Analogue Design Measurement Texas Instruments LM4562
    .. as possible. A very low-value capacitor, such as 10 pF, might be required between the inputs of each op amp. Possible design extensions Several interesting extensions could be added to this design to provide additional features, ...
    25-05-2023
85. Designing a wideband analog voltage and current meter. Part 1
    Circuits Analogue Design Measurement Texas Instruments LM4562
    Design a wideband analog multimeter to measure AC voltages and currents from 20 Hz to 1 MHz with a selectable ...
    24-05-2023
86. Zero-bias detector yields high sensitivity with nanopower consumption
    Circuits Wireless Analog Devices LTC1540
    .. power in reserve to answer an incoming call. For smallest size, most operate in the ultrahigh frequency range, where the design of a micropower receiver circuit is problematic. Familiar techniques, such as direct conversion, super ...
    23-05-2023
87. 5 V to 200 V Converter for APD Bias
    Circuits High Voltage Supply Linear Technology LT1172
    .. combination provides short-circuit protection. Avalanche photodiodes (APD) require high voltage bias. Figure 1’s design provides 200 V from a 5 V input. The circuit is a basic inductor flyback boost regulator with a major ...
    12-05-2023
88. Turn a set/reset latch into an astable/monostable multivibrator
    Circuits Oscillators Texas Instruments SN74HC00 SN74HC02 CD4001B CD4011B CD4013B
    .. Design Idea describes a simple way to form a reliable astable or monostable multivibrator from a set/reset latch. ...
    27-04-2023
89. DAC (PWM) Controlled Triangle/Sawtooth Generator
    Circuits Oscillators Texas Instruments LMC555
    .. for a triangle generator is programmable production of both symmetric and asymmetric (sawtooth) waveforms. In this design, waveshape is controlled by V PMW2 as illustrated in Figure 3. Setting V PMW2 to 2.5 V yields a symmetrical ...
    20-04-2023
90. Isolated PWM suits low frequencies
    Circuits Signal Processing, Filters Analog Devices LT1719 LT6255 LTC6992-2
    .. the isolation barrier using a small transformer; transformers do not pass low-frequency signals well. The circuit in this Design Idea converts a low-frequency PWM (pulse-width-modulated) signal to a higher frequency, which you pass across ...
    12-04-2023

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