H-Bridge - Revision history

Mschied: /* Links */

2013-01-09T13:51:33Z

Links

← Older revision		Revision as of 13:51, 9 January 2013
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	* [http://wiki.ctbot.de/index.php/L293D German Tutorial, connecting 2 Motors to an L293D]		* [http://wiki.ctbot.de/index.php/L293D German Tutorial, connecting 2 Motors to an L293D]
	* [http://itp.nyu.edu/physcomp/Labs/DCMotorControl English Tutorial, connecting one Motor to an L293D]		* [http://itp.nyu.edu/physcomp/Labs/DCMotorControl English Tutorial, connecting one Motor to an L293D]
	* [http://www.mikrocontroller.net/articles/H-Br%C3%BCcken_%C3%9Cbersicht Circuit of an H-Bridge entirely made of discrete components like transistors, free wheeling diodes] ~~(including NO shortage prevention)~~		* [http://www.mikrocontroller.net/articles/H-Br%C3%BCcken_%C3%9Cbersicht Circuit of an H-Bridge entirely made of discrete components like transistors, free wheeling diodes]

	[[Category:Electronics]]		[[Category:Electronics]]
	[[Category:Martin Schied]]		[[Category:Martin Schied]]
	[[Category:Motor]]		[[Category:Motor]]

Mschied: simplified and corrected a few facts.

2013-01-09T13:51:00Z

simplified and corrected a few facts.

← Older revision		Revision as of 13:51, 9 January 2013
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	An H-Bridge is a circuit of 4 switches allowing to select the direction of current flowing through a part. The simplest H-Bridge consists of four manually controlled switches:		An H-Bridge is a circuit of 4 switches allowing to select the direction of current flowing through a part. The simplest H-Bridge consists of four manually controlled switches. The name is derived from the circuit diagram which looks like a capital H.

	When using ~~a simple~~ H-Bridge it is important to prevent switches to short the supply voltage. In ~~several commercially available~~ H-~~Bridges~~ additional ~~circuits prevent~~ accidental short circuits ~~- beware!~~		When using an H-Bridge it is important to prevent switches to short circuit the supply voltage. In a few H-bridge designs additional circuitry prevents accidental short circuits, but most available chips don't have this protection.

	[[File:H-BridgeLeftRight.png]]		[[File:H-BridgeLeftRight.png]]

	Often "Half-bridges" are ~~found~~ where you'd expect an H-Bridge. They are almost the same - but only the left (or right) part of the Bridge (2 switches in series with their middle as output. Out of two half-bridges you can build an H-Bridge (also often referred to as Full-Bridge)		Often "Half-bridges" are used where you'd expect an H-Bridge. They are almost the same - but only the left (or right) part of the Bridge is already connected. (2 switches in series with their middle as output. Out of two half-bridges you can build an H-Bridge (also often referred to as Full-Bridge).

	== Use ==		== Use ==
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	== Popular H-Bridges and Half-Bridges ==		== Popular H-Bridges and Half-Bridges ==

	L293D quad half-bridge: one of the cheapest part to build one or two H-Bridges. Has built in diodes, comes in a standard DIP package: conveniently useable in a Breadboard. 600 mA continuous current~~. Since it's a Half-Bridge there's no circuitry preventing shorting outputs~~.		L293D quad half-bridge: one of the cheapest part to build one or two H-Bridges. Has built in diodes, comes in a standard DIP package: conveniently useable in a Breadboard. 600 mA continuous current.

	SN754410: built in diodes, DIP package - very similar to the L293D but more power (1.1A per channel) and allowed pwm frequencies are higher. According to its dataseheet the SN754410 is usable as a replacement for the L293. (even better).		SN754410: built in free wheeling diodes, DIP package - very similar to the L293D but more power (1.1A per channel) and allowed pwm frequencies are higher. According to its dataseheet the SN754410 is usable as a replacement for the L293. (even better).

	L298N: Well known and widely used Dual H-Bridge (2 H-Bridges in One IC). Comes as Powerdip IC - doesn't fit into breadboard without modifications. 2 A continuous current. Even if it's designed to be an H-Bridge it has no additional logic preventing shorts.		L298N: Well known and widely used Dual H-Bridge (2 H-Bridges in One IC). Comes as Powerdip IC - doesn't fit into breadboard without modifications. 2 A continuous current. Even if it's designed to be an H-Bridge it has no additional logic preventing shorts.

Max: /* Use */

2012-01-07T14:00:23Z

Use

← Older revision		Revision as of 14:00, 7 January 2012
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	== Use ==		== Use ==

	* H-Bridges are often used to switch DC~~-motors~~ in speed and direction.		* H-Bridges are often used to switch [[DC motor]]s in speed and direction.
	* Generate AC-Currents where AC is needed.		* Generate AC-Currents where AC is needed.
	* Turn a bi-stable relay on/off		* Turn a bi-stable relay on/off
	* Dual-H-Bridges (or quadruple half bridges) Are useful to control bipolar stepper ~~motors~~		* Dual-H-Bridges (or quadruple half bridges) Are useful to control bipolar [[stepper motor]]s

	== Popular H-Bridges and Half-Bridges ==		== Popular H-Bridges and Half-Bridges ==

Max: /* Links */

2012-01-07T13:53:09Z

Links

← Older revision		Revision as of 13:53, 7 January 2012
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	== Links ==		== Links ==
			* [http://www.bobblick.com/techref/projects/hbridge/hbridge.html H-Bridge using darlington Transistors - 5A]
	~~H-Bridge using darlington Transistors - 5A~~		* [http://www.armory.com/~rstevew/Public/Motors/H-Bridges/Blanchard/h-bridge.htm The Armory] Figure-1 shows a circuit of an h-bridge using MOSFET transistors.
	http://www.bobblick.com/techref/projects/hbridge/hbridge.html		* [http://wiki.ctbot.de/index.php/L293D German Tutorial, connecting 2 Motors to an L293D]
			* [http://itp.nyu.edu/physcomp/Labs/DCMotorControl English Tutorial, connecting one Motor to an L293D]
	~~Figure-1 on~~ [http://www.armory.com/~rstevew/Public/Motors/H-Bridges/Blanchard/h-bridge.htm ~~this page from~~ The Armory] ~~displays~~ a circuit of an h-bridge using MOSFET transistors.		* [http://www.mikrocontroller.net/articles/H-Br%C3%BCcken_%C3%9Cbersicht Circuit of an H-Bridge entirely made of discrete components like transistors, free wheeling diodes] (including NO shortage prevention)

	~~German Tutorial, connecting 2 Motors to an L293D:~~
	http://wiki.ctbot.de/index.php/L293D

	~~English~~ Tutorial, connecting ~~one Motor~~ to an L293D:
	http://itp.nyu.edu/physcomp/Labs/DCMotorControl

	Circuit of an H-Bridge entirely made of discrete components like transistors, free wheeling diodes. (including NO shortage prevention)~~: http://www.mikrocontroller.net/articles/H-Br%C3%BCcken_%C3%9Cbersicht~~

	[[Category:Electronics]]		[[Category:Electronics]]
	[[Category:Martin Schied]]		[[Category:Martin Schied]]
	[[Category:Motor]]		[[Category:Motor]]

Max at 13:50, 7 January 2012

2012-01-07T13:50:59Z

← Older revision		Revision as of 13:50, 7 January 2012
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	[[Category:Electronics]]		[[Category:Electronics]]
	[[Category:Martin Schied]]		[[Category:Martin Schied]]
			[[Category:Motor]]

Mschied at 15:13, 16 December 2011

2011-12-16T15:13:28Z

← Older revision		Revision as of 15:13, 16 December 2011
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	== Links ==		== Links ==

			H-Bridge using darlington Transistors - 5A
			http://www.bobblick.com/techref/projects/hbridge/hbridge.html

			Figure-1 on [http://www.armory.com/~rstevew/Public/Motors/H-Bridges/Blanchard/h-bridge.htm this page from The Armory] displays a circuit of an h-bridge using MOSFET transistors.

	German Tutorial, connecting 2 Motors to an L293D:		German Tutorial, connecting 2 Motors to an L293D:

Mschied at 21:22, 5 December 2011

2011-12-05T21:22:21Z

← Older revision		Revision as of 21:22, 5 December 2011
Line 11:		Line 11:
	* H-Bridges are often used to switch DC-motors in speed and direction.		* H-Bridges are often used to switch DC-motors in speed and direction.
	* Generate AC-Currents where AC is needed.		* Generate AC-Currents where AC is needed.
			* Turn a bi-stable relay on/off
	* Dual-H-Bridges (or quadruple half bridges) Are useful to control bipolar stepper motors		* Dual-H-Bridges (or quadruple half bridges) Are useful to control bipolar stepper motors

Mschied at 20:46, 5 December 2011

2011-12-05T20:46:54Z

← Older revision		Revision as of 20:46, 5 December 2011
Line 29:		Line 29:
	http://itp.nyu.edu/physcomp/Labs/DCMotorControl		http://itp.nyu.edu/physcomp/Labs/DCMotorControl

	Circuit of an H-Bridge entirely made of discrete components like transistors, free wheeling diodes (including shortage prevention): http://www.mikrocontroller.net/articles/H-Br%C3%BCcken_%C3%9Cbersicht		Circuit of an H-Bridge entirely made of discrete components like transistors, free wheeling diodes. (including NO shortage prevention): http://www.mikrocontroller.net/articles/H-Br%C3%BCcken_%C3%9Cbersicht

	[[Category:Electronics]]		[[Category:Electronics]]
	[[Category:Martin Schied]]		[[Category:Martin Schied]]

Mschied at 20:44, 5 December 2011

2011-12-05T20:44:30Z

← Older revision		Revision as of 20:44, 5 December 2011
Line 1:		Line 1:
	An H-Bridge is a circuit of 4 switches allowing to select the direction of current flowing through a part. The simplest H-Bridge consists of four manually controlled switches:		An H-Bridge is a circuit of 4 switches allowing to select the direction of current flowing through a part. The simplest H-Bridge consists of four manually controlled switches:

	When using a simple H-Bridge it is important to prevent switches to short the supply voltage. In commercially available H-Bridges additional circuits prevent accidental short circuits.		When using a simple H-Bridge it is important to prevent switches to short the supply voltage. In several commercially available H-Bridges additional circuits prevent accidental short circuits - beware!

	[[File:H-BridgeLeftRight.png]]		[[File:H-BridgeLeftRight.png]]

			Often "Half-bridges" are found where you'd expect an H-Bridge. They are almost the same - but only the left (or right) part of the Bridge (2 switches in series with their middle as output. Out of two half-bridges you can build an H-Bridge (also often referred to as Full-Bridge)

			== Use ==

			* H-Bridges are often used to switch DC-motors in speed and direction.
			* Generate AC-Currents where AC is needed.
			* Dual-H-Bridges (or quadruple half bridges) Are useful to control bipolar stepper motors

			== Popular H-Bridges and Half-Bridges ==

			L293D quad half-bridge: one of the cheapest part to build one or two H-Bridges. Has built in diodes, comes in a standard DIP package: conveniently useable in a Breadboard. 600 mA continuous current. Since it's a Half-Bridge there's no circuitry preventing shorting outputs.

			SN754410: built in diodes, DIP package - very similar to the L293D but more power (1.1A per channel) and allowed pwm frequencies are higher. According to its dataseheet the SN754410 is usable as a replacement for the L293. (even better).

			L298N: Well known and widely used Dual H-Bridge (2 H-Bridges in One IC). Comes as Powerdip IC - doesn't fit into breadboard without modifications. 2 A continuous current. Even if it's designed to be an H-Bridge it has no additional logic preventing shorts.

	== Links ==		== Links ==
Line 13:		Line 29:
	http://itp.nyu.edu/physcomp/Labs/DCMotorControl		http://itp.nyu.edu/physcomp/Labs/DCMotorControl

			Circuit of an H-Bridge entirely made of discrete components like transistors, free wheeling diodes (including shortage prevention): http://www.mikrocontroller.net/articles/H-Br%C3%BCcken_%C3%9Cbersicht
	Circuit of an H-Bridge entirely made of ~~separate~~ components like transistors, free wheeling diodes (including shortage prevention): http://www.mikrocontroller.net/articles/H-Br%C3%BCcken_%C3%9Cbersicht

	[[Category:Electronics]]		[[Category:Electronics]]
	[[Category:Martin Schied]]		[[Category:Martin Schied]]

Mschied at 15:30, 5 December 2011

2011-12-05T15:30:59Z

← Older revision		Revision as of 15:30, 5 December 2011
Line 6:		Line 6:

	== Links ==		== Links ==
	Circuit of an H-Bridge made of transistors, ~~including~~ free wheeling diodes ~~and~~ shortage prevention: http://www.mikrocontroller.net/articles/H-Br%C3%BCcken_%C3%9Cbersicht
			German Tutorial, connecting 2 Motors to an L293D:
			http://wiki.ctbot.de/index.php/L293D

			English Tutorial, connecting one Motor to an L293D:
			http://itp.nyu.edu/physcomp/Labs/DCMotorControl


			Circuit of an H-Bridge entirely made of separate components like transistors, free wheeling diodes (including shortage prevention): http://www.mikrocontroller.net/articles/H-Br%C3%BCcken_%C3%9Cbersicht

	[[Category:Electronics]]		[[Category:Electronics]]
	[[Category:Martin Schied]]		[[Category:Martin Schied]]