Full-Bridge Amplification Using a Resistor Arrays
to Provide Precise Matching in Excitation Amplifier - This
example provide excitation using resistor arrays to produce precise gain. The circuit is configured to provide
10V and –5V excitation to the bridge, producing a common mode voltage at the input to the LTC2430/LTC2431 of 2.
5V, maximizing the AC input range for applications where induced 60Hz could reach amplitudes up. . . [Linear
Technology App Note, Apr 29th 2010]
Full-Bridge Amplification Using a Single Amplifier - This example shows a single amplifier being used to produce single-ended gain. This topology
is best used in applications where the gain setting resistor can be made to match the temperature coefficient of
the strain gauges. If the bridge is composed of precision resistors, with only one or two variable elements, the
reference. . . [Linear Technology App Note, Apr 29th 2010]
Full-Bridge Amplification Using Autozero
Amplifiers to Reduce Input Referred Noise - This circuit
shows an example of a simple amplification scheme. This example produces a differential output with a common mode
voltage of 2. 5V, as determined by the bridge. The use of a true three amplifier instrumentation amplifier is not
necessary, as the LTC2430/LTC2431 have common mode rejection far beyond that of most. . . [Linear Technology App
Note, Apr 29th 2010]
Full-Bridge Load Current Monitor - The LT1990 is a micropower precision difference amplifier with a very high common mode input
voltage range. It has pin selectable gains of 1 or 10. The LT1990 operates over a ±250V common mode voltage range
on a ±15V supply. The inputs are fault protected from common mode voltage transients up to ±350V and differential
voltages. . . [Linear Technology App Note, Apr 5th 2010]
Full-Bridge Quarter Brick DC/DC Converter Reference Design - AN1369 - Technology Inc. . . . [Microchip App Note last updated on 17-Apr-12]
Full-featured H-bridge - This is a slightly revised version of the 6-transistor H-bridge designed by Mark Tilden and
found on the BEAM Tek website (now only available via archive). I encourage anyone interested in H-bridges to
read Mark's article, as it gives an excellent step-by-step explanation of how the bridge works. In particular, it
discusses variations on the bridge, such as the positive-input and negative-input versions. The basic circuit is
as Mark describes it. The changes are as follows. . . . [Bruce Robinson]
Generate Boost Rails In A Bridge-Rectifier Circuit - 11/16/12 EDN Design Idea Bridge ac inputs have the ability to sink and source current with
reference to the bridge-rectifier outputs. Many single-voltage power supplies consist of a transformer, a
rectifier, and a filter capacitor, as shown in Figure 1. This circuit is relatively inexpensive and easy to build
but supplies only a single voltage. Circuits employing op amps, data converters, and other analog circuit blocks
often require additional voltages to operate. These extra voltages can be either higher than the main supply
voltage or negative. . . . [by Horst Koelzow, Calgary, Alberta]
H Bridge Motor Control Circuits - This page features H-Bridge circuits used for controlling direct current motors. Several
designs are shown using both CMOS and Bi-Polar power devices. scroll to view all of the circuits. . . . [from
Rob Paisley's Model Train web site]
H Bridge Motor Controller uses Low Power - This circuit uses a few logic gates & a 74AC240 to control power to a small gear motor . . .
[Hobby Circuit designed by David A. Johnson P.E., 07/03/05]
Half Bridge Motor Driver - The LT1336 is a cost effective half-bridge N-channel power MOSFET driver. The floating
driver can drive the topside N-channel power MOSFETs operating off a high voltage (HV) rail of up to 60V
(absolute maximum). In PWM operation an on-chip switching regulator maintains charge in the bootstrap capacitor
even when approaching. . . [Linear Technology App Note, Apr 5th 2010]
H-Bridge Design - With a Protection against Having Two Positive Input Pulses. . . . [G.L. Chemelec, designer]
Low Power H Bridge
Motor Controller - This circuit uses a few logic gates
& a 74AC240 to control power to a small gear motor . . . [Circuit by David Johnson P.E., 07/03/05]
Low Voltage H-Bridge - TTL type Q and inverted Q inputs control a classic H-bridge circuit, rated at 50 volts and
about 10 amps. The circuit can control power and direction of a DC motor . . . [Circuit by Dave Johnson P.E.,
02/04/07]
Make A Bridge Rectifier
from Diodes - Make your own single or multi phase bridge
rectifier from diodes. . . . [REUK-Renewable Energy UK website]
Microcontroller drives H bridge to power a permanent-magnet DC motor - 03/15/07 EDN Design Idea Improved H-bridge requires only two driver signals. . . [by
Luca Bruno, ITIS Hensemberger Monza, Lissone, Italy]
PIC16F84 TRIAC/IGBT Brightness Phase Controller - . . . [MicrochipC by Mike Pearce]
Programmable-gain amplifier is low-cost - 01/18/01 EDN
Design Idea Numerous programmablegain amplifiers are available, but a simple solution provides the option of
using 256 gain steps with an 8-bit DAC and higher steps. PDF has several circuits, scroll down. . . . [by J
Jayapandian, Indira Gandhi Centre for Atomic Research, Kalpakkam, India]
RC Network Eliminates Precision Reference - 08/04/94 EDN Design Idea The circuit in Fig 1 uses a magneto-resistive sensor to detect
small magnet displacements without resorting to a precision voltage reference. A simple RC divider takes the
place of the reference, eliminating an expensive component. . . [by Christophe Basso, European Synchrotron
Radiation Facility, Grenoble, France]
Resolve 0.1-Ff Change from 100 Pf - 01/06/00 EDN Design Idea The circuit in Figure 1 can resolve 0. 1-fF changes in a 100-pF
bridge element and can accommodate large-scale changes in the bridge without adjustment. You can use changes in
capacitance to measure applied pressure, rotation, torque, liquid level, the wat. . . [by Derek Redmayne]
Resolves 0.1-Ff Change from 100 Pf - 01/06/00 EDN Design Idea The circuit in Figure 1 can resolve 0. 1-fF changes in a 100-pF
bridge element and can accommodate large-scale changes in the bridge without adjustment. You can use changes in
capacitance to measure applied pressure, rotation, torque, liquid level, the wat. . . [by Derek Redmayne]
Sensor Bridge - (spice design) . . . [Rick (last name not given)]
Sensor Bridge
with Current Bias - (spice design) . . . [Rick (last name
not given)]
Soldering iron driver bridge controls temperature -
09/06/13 EDN Design Idea With a power supply and a replacement soldering handle you can implement this
temperature-controlled soldering iron driver. One way you can control the temperature of a soldering iron is with
a microcontroller, using temperature feedback from the thermistor in the handle near the iron's tip. This Design
Idea presents a soldering iron driver that does this using only analog components. . . . [by Kiril Karagiozov]
Three Phase Bridge Rectifier - Find out about three phase bridge rectifiers. . . . [REUK-Renewable Energy UK website]
Wattmeter - The extra input B is for a later SWR brigde project, also the TX serial output will be in
use later. The uncalibrated signal response is: +1/-1 dB from 1MHz to 450MHz. Input SWR vill varry from 1. 00 to
1. 30, depending on input frequency. To make the SWR this good, you need to assemble the input circuit correct
and adjust the capasitor. Input power range: -60 to +30dBm that is 1 nW to 1 Watt. . . .
Z-bridge - A Cheaper H-Bridge Design - the Zoelen Bridge (Z-Bridge) . . . [A.A. van Zoelen's] |