Google is your friend.. several things pop up quite easily, for instance this one: Subwoofer active low pass filter or this one: Single Supply Active Filter with Virtual Ground (using a virtual ground)
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I prefer to use dc to dc converter
the "normal" dual supply Low Pass filter is better from all aspect
I prefer to use dc to dc converter to make dual +/-12V or 15V
this 2 types have also isolated Ground (input ground to output ground)
Single 12V DC to Dual 12V DC/2A Converter For Car audio design. isolated Ground | eBay
12V Isolated Ground PWM DC-DC Converter with Remote Power Turn On | eBay
the "normal" dual supply Low Pass filter is better from all aspect
I prefer to use dc to dc converter to make dual +/-12V or 15V
this 2 types have also isolated Ground (input ground to output ground)
Single 12V DC to Dual 12V DC/2A Converter For Car audio design. isolated Ground | eBay
12V Isolated Ground PWM DC-DC Converter with Remote Power Turn On | eBay
Thank you very much for taking the trouble to help me. I want to use the low pass filter to feed an amp that i built with LA4440 (bridge mode). The LA4440 amp runs by 12v single supply dc. That is why i wanted the single supply low pass filter so that i can use the same power supply to run the low pass filter and amp together.
Can i use a low pass filter that runs with dual volt power supply with conjunction with an amp that runs on single supply? (provided that i use two separate power source and separate single and dual volt power supply). Is that any problem?
I want your suggestion.
Of course I have/am. You misunderstand, it was not a dig at you. Did you read the thread? I'm interested by how and why it happens that basic questions are asked here and that they are becoming more common, and the comment of "Google is your friend" is often heard and I query it.
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variable low pass filter?
Let me ask you simple question.
do you need variable low pass filter or it's ok with you fixed low pass filter?
Let me ask you simple question.
do you need variable low pass filter or it's ok with you fixed low pass filter?
Is the circuit of your first link that used LM358N a good one? Will that work ok?
Single Supply Low Pass Filter if it help you? N-Joy
Thank you so much for the schematic diagram. I was just looking for something like this.
I have still some problems (Sorry
):I doubt whether I will find any Zenor diode of 13V in my local market (12V Zenor is available, will that do?)
And C6 in your diagram shows "CAP POL", what Capacitor should I use here?
Thank you so much for the schematic diagram. I was just looking for something like this.
I have still some problems (Sorry
I doubt whether I will find any Zenor diode of 13V in my local market (12V Zenor is available, will that do?)
And C6 in your diagram shows "CAP POL", what Capacitor should I use here?
You can use 12V Zener this is to stabilize the power supply voltage and make sure it not over the 12V. but... this diagram can work up to 24VDC so you can not use this diode at all. the capacitor can be 100-470uf 25V elect.
maybe you will find nice things to you here:
motronix2012 on eBay
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