Circuits & Schematics - Oscillators - 10

Our op amp family has expanded with industry-leading speed versus supply current. The LTC6258/LTC6259/LTC6260 family (single, dual, quad) provides 1.3 MHz gain-bandwidth product at a super low 20 uA supply current, with 400 uV maximum offset ...

White-noise generators generate a flat graph of output-power density versus frequency. These generators are useful for testing circuits that have an extended low-frequency or dc response. However, the presence of pink, or flicker, noise complicates ...

This Design Idea illustrates a way to make use of MOSFETs’ parasitic body diodes in a power circuit that can be used in UPS and energy-recovery (e.g., regenerative braking) designs (Figure 1). Figure 1. The circuit can work in two modes: as a ...

The main purpose for building the circuit in Figure 1 is to study the idiosyncrasies of X5R, Z5U, and Y5V multilayer ceramic capacitors. The circuit is also an inexpensive VCO (voltage-controlled oscillator) with only five components. Figure 1. ...

John R Ambrose EDN Demodulators, directional circuits, and other electronics applications often need two sine waves with a 90 difference in phase a sine wave and its cosine wave. Engineers typically use analog filters to create the phase shift. ...

Philip Simpson, Maxim Integrated Application Note 1186 When a processor-controlled device must be guaranteed to operate, designers often choose to reset the processor periodically rather than rely on a watchdog circuit. In low-power systems the ...

Michael Shustov, Tomsk A diagram of a rectangular pulse generator with independent frequency control from 1 to 10 kHz and duty cycle from 0 to 100% is given. The problem of designing impulsers with independent pulse frequency adjustment and their ...

Mikhail Shustov, Tomsk A simple driver circuit of bipolar pulses with separate and independent frequency adjustment and duty cycle is given. Bipolar pulses are mainly used to switch transistors alternately in bridge and half-bridge voltage ...

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 ...

It’s not always easy to design a ramp generator whose ramping frequency can be changed without manipulation of capacitors or inductors. Many ramp circuit designs are available, but they may not be flexible when it comes to varying the rise ...