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H-Bridge Motor Driver Circuit - This circuit drives small DC motors up to about 100 watts or 5 amps or 40 volts, whichever comes first. Using bigger parts could make it more powerful. Using a real H-bridge IC makes sense for this size of motor, but hobbyists love to do it themselves, and I thought it was about time to show a tested H-bridge motor driver that didn't use exotic parts.
20W Bridge Audio Amplifier - 20W Bridge Audio Amplifier kit, based on the TDA2005 IC, a class B dual audio amplifier, specifically designed for car radio applications etc.
4-transistor H-bridge - an interesting 4-transistor H-bridge variant; this is cheap and easy to build, and best of all is "smokeless" (i.e., no combination of inputs can cause  bridge to self-destruct).
6-transistor H-bridge - This is  six transistor "Tilden style" H-bridge; while not as old as  original "basic H-bridge," this goes "way back," and is  basis for many BEAM driver circuits
A better MOSFET H Bridge Schematic
A DMOS 3A, 55V, H-Bridge - National Semiconductor Application Note
A H-Bridge Design -  With a Protection against Having Two Positive Input Pulses..
AN-1312: Scan Bridge STA111/STA112 Timing - National Semiconductor Application Note
AN16 Automotive and Household Siren Driver Circuits: ZSD100 and Discrete 'H'-Bridge Minimum Parts Count Solution - Zetec Semiconductors  Applications Notes A solution is provided that uses a minimum number of components by utilising an application specific signal generation IC, and a high efficiency 'H'-bridge effected with 3A DC rated Super-δ TO92 style switching transistors.
AN251: Bridge Sensing with the MCP6S2X PGAs - Microchip Application Note Published 6-May-03
AN-694: A DMOS 3A, 55V, H-Bridge: The LMD18200 - National Semiconductor Application Note
AN717: Building a 10-Bit Bridge Sensing Circuit using the PIC16C6XX and MCP601Operational Amplifier - Microchip Application Note Published 3-Apr-01
AN811: The RS-232/DALI Bridge Interface - Microchip Application Note Published 26-Apr-02
Apex-AN03 Bridge Circuit Drives - 2/2001, AN3UREVC : 255 Kb
Apex-AN20 Bridge Mode Operation of Power Amplifiers - 11/2004, AN20UREVD : 288 Kb
Apex-AN28 Proper Analog Wiring of Power Amplifiers - 2/1998, AN28UREVB : 126 Kb
Bridge Sensing with the MCP6S2X PGAs - Microchip Application Note Published 6-May-03
Bridging Adapter for Power Amplifiers
Bridging enhances filter close in selectivity - EDN-Design Ideas:   General filters are bandpass filters that usually employ bridging couplings between nonadjacent interstage couplings (Reference 1). This class of filters also includes bridging coupling across  filter input and output ports. The implementation of input-to-output bridging already exists for a one-pole filter (Reference 2). For a two-pole filter, dielectric resonators help achieve input-to-output bridging coupling (Reference 3).
Building a 10-Bit Bridge Sensing Circuit using the PIC16C6XX and MCP601Operational Amplifier - Microchip Application Note Published 3-Apr-01
Circuit Adds Programmability to Sensor Amplifier - EDN-Design Ideas:  The pressure-sensor amplifier circuit of Figure 1 offers a number of advantages over the traditional approach using the classic three-op-amp instrumentation amplifier. The circuit can operate from a single supply and uses only two op amps and 1% resistors. If the reference voltage, VREF, is 0V, the transducer gain for the circuit isTo ensure equal..
Delta Sigma ADC Bridge Measurement Techniques - AN96 Linear Technology AN96 features several applications that demonstrate how to take full advantage of Linear Technology's delta sigma ADCs when interfacing to sensors. In many cases, signal conditioning can be greatly simplified or eliminated completely. This note explains where it is appropriate to use amplifiers and how to optimize amplifier gain. Also included..
Design Approach Simplifies Signal Conditioning - EDN-Design Ideas
H-Bridge Design -  With a Protection against Having Two Positive Input Pulses..
MicroController drives H bridge to power a permanent magnet DC motor - EDN-Design Ideas:  Improved H-bridge requires only two driver signals..
PIC16F84 TRIAC/IGBT Brightness Phase Controller
Programmable Gain Amplifier is Low Cost #1 - EDN-Design Ideas:  Numerous programmable-gain amplifiers are available, but a simple solution provides the option of using 256 gain steps with an 8-bit DAC and higher steps with higher bit DACs (Figure 1). According to the inverting-amplifier configuration of an op amp, the output voltage is VOUT=VIN(RF/RIN)
Rc Network Eliminates Precision Reference - EDN-Design Ideas:  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 and obviating trimming each circuit.
Sensor Bridge
Sensor Bridge with Current Bias
Wattmeter - The extra input B is for a later SWR bridge 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 capacitor. Input power range: -60 to +30dBm that is 1 nW to 1 Watt.
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