Comments on: Stepper Motors, Part III: MOSFET Drivers http://www.neufeld.newton.ks.us/electronics/?p=48 Sun, 08 Dec 2024 17:19:24 -0600 hourly 1 http://wordpress.org/?v=3.1.3 By: James http://www.neufeld.newton.ks.us/electronics/?p=48&cpage=1#comment-27073 James Sun, 13 Feb 2011 12:42:47 +0000 http://www.neufeld.newton.ks.us/electronics/?p=48#comment-27073 Thanks for the reply Keith. I have a 7406 that I can use. So according to the schematic above, you didn't have to show the GND on IC1B of the 75452 since the VCC and GND of the 75452 will have to be connected anyway for the chip to be powered. Thanks. James. Thanks for the reply Keith. I have a 7406 that I can use. So according to the schematic above, you didn’t have to show the GND on IC1B of the 75452 since the VCC and GND of the 75452 will have to be connected anyway for the chip to be powered. Thanks.

James.

]]> By: Keith Neufeld http://www.neufeld.newton.ks.us/electronics/?p=48&cpage=1#comment-27056 Keith Neufeld Sat, 12 Feb 2011 23:37:11 +0000 http://www.neufeld.newton.ks.us/electronics/?p=48#comment-27056 James, the SN75452 has two two-input NAND gates with open-collector outputs, plus pin 4 to ground and pin 8 to VCC. Yes, the circuit uses an entire SN75452 per stepper coil (or DC motor). You'd probably be happier with something like a 74*06 hex inverter with high-voltage open-collector outputs that could run as many as three coils from a single IC. Of course, you'd <em>really</em> be happier with something like an SN754410 or L293 or any of a host of other monolithic H-bridge drivers. The only reason I was experimenting with discrete circuitry was that I had the components on hand. James, the SN75452 has two two-input NAND gates with open-collector outputs, plus pin 4 to ground and pin 8 to VCC. Yes, the circuit uses an entire SN75452 per stepper coil (or DC motor).

You’d probably be happier with something like a 74*06 hex inverter with high-voltage open-collector outputs that could run as many as three coils from a single IC. Of course, you’d really be happier with something like an SN754410 or L293 or any of a host of other monolithic H-bridge drivers. The only reason I was experimenting with discrete circuitry was that I had the components on hand.

]]> By: James http://www.neufeld.newton.ks.us/electronics/?p=48&cpage=1#comment-27006 James Wed, 09 Feb 2011 00:15:52 +0000 http://www.neufeld.newton.ks.us/electronics/?p=48#comment-27006 Hello Keith, I'm trying to build the H-bridge circuit that you have above and a little bit confused. For the SN75452 that you have below, which pin is connected to GND. I know it's a dual peripheral driver with a total of 8 pins including the VCC and GND. So with the circuit above, if you use only one chip then all the pins would have been used since you have to power the circuit with VCC and GND. Thanks. James. Hello Keith,

I’m trying to build the H-bridge circuit that you have above and a little bit confused. For the SN75452 that you have below, which pin is connected to GND. I know it’s a dual peripheral driver with a total of 8 pins including the VCC and GND. So with the circuit above, if you use only one chip then all the pins would have been used since you have to power the circuit with VCC and GND. Thanks.

James.

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