DPP Adds Versatility to VFC: 11/14/02 EDN-Design
Ideas / The basic VFC (voltage-to-frequency
converter) comprises an integrator (IC1) and a
Schmitt-trigger circuit (IC2). The integrator
converts the dc input voltage, VIN, to a linear
voltage ramp, and the Schmitt trigger sets the
limits of the integrators output voltage.
LowSide CurrentSensing Circuit Uses Synchronous VToF
Converter : 09/02/02 Electronic Design - Ideas
for Design / A voltage-to-frequency converter (VFC)
can easily measure current flow and convert it to a
digital signal understood by the timer/counter input
of a microcomputer (µC) or microprocessor. It's a
straightforward task to add a single opto-isolator...
VCO Transforms Sound Card Into Precision DCCoupled
ADC : 08/19/02 Electronic Design - Ideas for
Design / Personal-computer sound cards are
sometimes used for analog audio signal acquisition.
Also, the Web features many free programs that
implement virtual two-channel oscilloscopes by
acquiring signals through the sound card. However,
sound cards suffer...
VCO uses Programmable Logic: 11/14/02 EDN-Design
Ideas / A VCO (voltage-controlled oscillator) is an
analog circuit, so you cannot find it in the
libraries for the design of digital programmable