Voltage to Voltage converter design

Status
Not open for further replies.
Only way is with a switch mode converter, not particularly practical for a novice, generally it's easier to just use the right supply to begin with, if oyu need -12/+12 rails you can use a PC power supply though the negative rail generally can only source a few hundred ma.
 
You make no mention of the current requirement?

I would just use a DC / DC converter along these lines. They are quite common from a host of manufacturers. For example the MGW301212 in the link has a 9 to 18 volt input and a -12 / +12 volt output. They have input / output isolation so you would run your -5 to +5 in giving a 10 volt DC input and providing a -12 Com +12 volt output. Again, you do not mention current?

As mentioned, the ideal solution would be a power supply around what you actually need.

Ron
 
Look at a MAX232. You can generate a 12V rail from a 7812 linear reg. Likewise generate the 5V from a 7805 (see TI.COM) then generate the negative rails using the charge pump. This is the simplest way at this sort of current
 
I had seen some circuits LM series based voltage converter..is this suitable to give the supply voltage for audio amplifier
 
You want + / - 12 volts. You never stated the current requirement? Now you mention an audio amplifier and again no mention of the current you need? You want a DC / DC converter and there is no way to say anymore unless you provide how much current you will need at + / - 12 volts. Supply voltage alone for an audio amp isn't enough as you do not mention the power? Additionally, the available current at the source ( + / - 5 volts) needs to be known.

Ron
 
Arghhh, my bad. I see the current listed:

I need a voltage to voltage converter design(circuit) from DC +/-5V to +/-15V with current rating of 8.5mA.
Click to expand...

Must be a small audio amp?

Anyway, sorry about that. I would still be considering a nice small DC / DC converter like I linked to. Building one is not, as mentioned, an easily done task. However, your call as less than 10 mA is not much current required.

Ron
 
Hi...

I selected the DC-DC converter circuit using Maxim product Max 1683.

By using this data sheet We can construct the Tripler circuit ,that means it will produce the output DC +15V from input +5V.But I need negative DC -15V also
.[The another Maxim product max680 it will give the output DC +/-10 V from the input DC +/-5 V.]

How can I convert the positive voltage to negative voltage?

Please suggest some ideas for this one.

Thanks.
 
Last edited:
Hi ...If anybody worked in UC3844 or UC3845 flyback converter.please help me..
i need DC+/-5 V to DC +/-15 V converter using this IC.
 
Status
Not open for further replies.

Similar threads

G
  • Question
A/D converter reference voltage on negative terminal
Replies
19
Views
900
gjoo
G
  • Question
Modification of 1.5 to 12 boost converter voltage oscillator switch with npn transistor
Replies
5
Views
906
rjenkinsgb
V
  • Question
Logging Voltage
2
Replies
22
Views
2K
Voltmanbucks
V
  • Question
The very simple circuit that the boost converter voltage from 1.5 to 12 does not work in the Proteus software...why????
Replies
12
Views
848
electronium
  • Question
No contact AC voltage sensing
Replies
5
Views
680
ZipZapOuch
Menu
Log in
Register
Cookies are required to use this site. You must accept them to continue using the site. Learn more…