AC Line Current Detector: |
Active feedback IC serves as current sensing instrumentation
amplifier: 07/24/03 EDN-Design Ideas / High-speed current
sensing presents a designer with some significant challenges.
Most techniques for sensing current involve measuring the
differential voltage the current produces as it flows through a
sense element, such as a resistor or a Hall-effect device. The
differential voltage across the sense element is generally small
and is often riding on a common-mode voltage that is
considerably ..... |
Analog input circuit serves any microcontroller: 12/20/2001
EDN - Design Ideas / The simple ADC in Figure 1 is perfect
for getting analog signals into a purely digital
microcontroller. Using just five surface-mount parts, you can
assemble it for less than 50 cents (1000), which is
approximately half the cost of a single-chip-ADC approach in the
same volume. Moreover, this design takes only one pin from the
microcontroller to operate. . |
Circuit Breaker Monitors Leakage Current: 06/21/01 EDN-Design
Ideas / PDF contains multiple circuits - scroll to find this
circuit.
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Circuit measures currents in dc servo motor: 12/06/2001 EDN
- Design Ideas / The simple circuit design in Figure 1 lets you
measure all components of a current flowing in a dc servo motor.
The rectified output of the circuit uses ground as a reference,
so you can measure the output by using a single-ended A/D
converter. The current-sense resistor, R1, has a value of 0. . |
Circuit Measures Small Current in DC Servo Motor: 12/07/01
EDN-Design Ideas |
Circuit Senses High Side Current: 03/01/01 EDN-Design Ideas
/ (One of several circuits in PDF) The accurate, high-side,
current-sense circuit does not use a dedicated, isolated supply
voltage, as some other schemes do.
|
Current Sense Amplifier Handles High Voltages: 11/06/97 EDN-Design
Ideas |
Current Sense IC Prevents Overcurrent Damage: 04/25/96 EDN-Design
Ideas |
Current sensing scheme improves PFC on/off sequences:
06/27/2002 EDN - Design Ideas / PFC (power-factor-correction)
preconverters typically use the step-up, or boost,
configuration, because this type of converter is relatively easy
to implement (Figure 1). However, this topology requires the
output voltage to be higher than the input voltage. When this
condition is not the case—for example, with on/off sequences or
under load conditions—some inrush current flows thro.... |
CurrentSensing for Crossbars: Maxim APP 391: Mar 01, 2001 /
Current sharing between DC/DC converter modules enables several
modules to be paralleled. In recent years, tight tolerances for
current sharing have made discrete current-sense circuit designs
a formidable challenge. This application note describes a
low-cost, space-saving and accurate current sensing and sharing
scheme using MAX4372. |
High Side Current Sensor has Period Output 1: Maxim APP
1084: May 31, 2002 |
High Side Current Sensor has Period Output 2: 03/07/02 EDN-Design
Ideas / PDF contains multiple circuits - scroll to find the one
of interest |
High side current sensor monitors negative rail: 04/17/03
EDN-Design Ideas / All dedicated current-sense amplifiers
provide high-side sensing on a positive supply, but you can
adapt such circuits for monitoring a negative supply (Figure 1).
The positive-supply pin, V+, connects to the system's positive
supply, and the ground pin, GND, connects to the negative
supply, VEE. That arrangement monitors the negative supply and
provides a positive output voltage for the extern.. |
HighAccuracy CurrentSense Amplifier Enables Current Sensing and
Current Sharing: Maxim APP 391: Mar 01, 2001 / Current
sharing between DC/DC converter modules enables several modules
to be paralleled. In recent years, tight tolerances for current
sharing have made discrete current-sense circuit designs a
formidable challenge. This application note describes a
low-cost, space-saving and accurate current sensing and sharing
scheme using MAX4372.
|
Integrator Forms Picoammeter: 07/17/97 EDN-Design Ideas
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MOSFET Current Sensing: Method of mirror current sensing a
MOSFET |
Simple circuit provides high side current sensing: 10/12/00
EDN-Design Ideas / PDF contains multiple circuits - scroll to
find this circuit |
Solar Current Meter: |
Transmitter accurately transfers voltage input: 05/15/03
EDN-Design Ideas / When you connect remote sensors to a central
process controller, a simple, robust, and commonly used
interface is the 4 to 20-mA loop. The advantages of this current
loop include the simplicity of just two twisted wires that share
both power and signal, the loop's high noise immunity in harsh
environments, and the de facto loop standard within the
process-control industry... |
Two Sensors Measure Three Line Currents: 09/01/95 EDN-Design
Ideas |
Voltage Reference improves JFET: 10/26/00 EDN-Design Ideas /
PDF contains multiple circuits - scroll to find this circuit The
common JFET current-source in Figure 1a has average output
impedance and depends heavily on the JFET's V P and I DSS
variations. These manufacturing variations limit the initial
accuracy of the current setpoint that the circuit can obtain
with a...
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