Stereo binaural WM-61A with preamps - Page 3

kelticwizard · 30th December 2006, 03:33 AM

I have a similar project in mind, using two or more WM-61A's for a measurement micriphone.

The INA217 looks very promising. My question, as a novice builder, is: can I hook up two or more INA217's using a single 9V battery? The specs say minimum voltage + 4.5 V. It doesn't have to be a split supply, does it?

kelticwizard · 30th December 2006, 04:34 AM

After looking at Mouser and Digi-Key, I notice the INA217 is not available.

Also, since I am considering up to four separate channels, it is a tad pricey-though not out of range if it really is the only chip usable.

Are there any slightly cheaper alternatives that might be available? I'm hoping to power everything off a 9 volt battery if possible.

30th December 2006, 03:33 AM	#21
kelticwizard diyAudio Member Join Date: Sep 2001 Location: Connecticut, The Nutmeg State	I have a similar project in mind, using two or more WM-61A's for a measurement micriphone. The INA217 looks very promising. My question, as a novice builder, is: can I hook up two or more INA217's using a single 9V battery? The specs say minimum voltage + 4.5 V. It doesn't have to be a split supply, does it? __________________ "A friend will help you move. A really good friend will help you move a body." -Anonymous

30th December 2006, 04:34 AM	#22
kelticwizard diyAudio Member Join Date: Sep 2001 Location: Connecticut, The Nutmeg State	After looking at Mouser and Digi-Key, I notice the INA217 is not available. Also, since I am considering up to four separate channels, it is a tad pricey-though not out of range if it really is the only chip usable. Are there any slightly cheaper alternatives that might be available? I'm hoping to power everything off a 9 volt battery if possible. __________________ "A friend will help you move. A really good friend will help you move a body." -Anonymous

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