Electronics, need help finding High Power Op-Amps. Need help finding High Power Op-Amps Quote: >I am trying to find some high-power Op-amps or push-pull stages to >drive a DC motor and I'd like the following specs: > Output voltage from +12 to -12 v > Output current 1 Amp or more > Thermal and Short-circuit protection > (Don't care much about frequency response).
The Silicon General SG2172/3172 is a 3A op-amp with 741 like characteristics. It has a max Vcc-Vee of 18 V though. These things are built like a tank! Texas Instruments H-Bridge Motor Driver 1A - SN754410. H-Bridge Motor Driver 1A - SN754410 Faster, cheaper, smaller, better, right?
The SN754410 Quad Half H-Bridge is just that. Capable of driving high voltage motors using TTL 5V logic levels, the SN754410 can drive 4.5V up to 36V at 1A continuous output current! For even higher current applications, it is possible to physically stack two devices on top of each other to get almost 2 A of drive current. The SN754410 is a quad half H-bridge IC. The following shows the connections for controlling 2 motors in either direction using 2 full H-bridges. Documents: SN754410 Datasheet Stepper Motor drive from Arduino using SN754410 PiNE | Bought two of these to control two 50:1 gearmotors (also from Hobbytronics). The schematic for using these chips shown on this site (and on most others presented on the web) shows a single chip controlling two motors.
(The web page quoted actually goes further: by piggy backing an extra SN754410 onto each chip, giving 4.4A per channel. Bangz | SingleSupply.pdf (application/pdf Object) Slos131.pdf (application/pdf Object) 100260.H-BRDG_WP_Jan09. SparkFun Ardumoto - Motor Driver Shield. The Ardumoto - Motor Driver Shield from Sparkfun is a motor shield for Arduino that will control two DC motors.
Based on the L298 H-bridge, the Ardumoto can drive up to 2 amps per channel. The board takes its power from the same Vin line as the Arduino board, includes blue and yellow LEDs to indicate active direction, and all driver lines are diode protected from back EMF. This the new version of this shield allows for either 3.3 or 5v logic, a separate and more robust VIN connection, and the PWM input has moved to pin 3. Snoa718. Motor Driver 1A Dual TB6612FNG. Description: The TB6612FNG motor driver can control up to two DC motors at a constant current of 1.2A (3.2A peak).
Two input signals (IN1 and IN2) can be used to control the motor in one of four function modes - CW, CCW, short-brake, and stop. The two motor outputs (A and B) can be separately controlled, the speed of each motor is controlled via a PWM input signal with a frequency up to 100kHz. The STBY pin should be pulled high to take the motor out of standby mode. Logic supply voltage (VCC) can be in the range of 2.7-5.5VDC, while the motor supply (VM) is limited to a maximum voltage of 15VDC. The output current is rated up to 1.2A per channel (or up to 3.2A for a short, single pulse). Board comes with all components installed as shown. Features: Dimensions: 0.8x0.8" Documents: Ntrol a DC motor with Arduino and L293D chip. [ad#Google links] This is a quick guide with a bit of extra info (pin configurations etc..) that I’ve learnt along the way on how to use the L293D with the Arduino, showing that we can: A) Use a supplemental power source to power the DC motor B) Use the L293D chip to drive the motor C) Use a switch to change the direction of the motor UPDATE: If you intend to use this for robotics then please check out this page here to get the most out of this chip – I actually found the SN754410 easier to work with that the L293D, its exactly the same apart from it can handle more current Arduino obstacle avoidance robot.
RKL298 L298 H-Bridge Motor Drive Project PCB Self Build Kit. Precision Amplifier - High Output Current - OPA548. The OPA548 is a low-cost, high-voltage/high-current operational amplifier ideal for driving a wide variety of loads.
A laser-trimmed monolithic integrated circuit provides excellent low-level signal accuracy and high output voltage and current. The OPA548 operates from either single or dual supplies for design flexibility. In single-supply operation, the input common-mode range extends below ground. The OPA548 is internally protected against over-temperature conditions and current overloads. In addition, the OPA548 was designed to provide an accurate, user-selected current limit. The Enable/Status (E/S) pin provides two functions.
Motor Driver - L293D - 1. Motor Driver and H-bridge basics Generally, even the simplest robot requires a motor to rotate a wheel or performs particular action.
Since motors require more current then the microcontroller pin can typically generate, you need some type of a switch (Transistors, MOSFET, Relay etc.,) which can accept a small current, amplify it and generate a larger current, which further drives a motor. This entire process is done by what is known as a motor driver.