5V + 5V positive voltage to a negative voltage circuit diagram of a 5V-5V

Use positive voltage I do not say, inelectronicCircuit, we often need to use a negative voltage, for example, we often need to give him establish a negative voltage op amp when in use. Here's a simple positive voltage to a negative voltage 5V 5V, for example talk about his circuit.

I usually need to use a negative voltage generally choose to use a dedicated chip to generate negative pressure, but these chips are more expensive, such as ICL7600, LT1054 and so on. Oh, almost forgot this MC34063 chip used in most cases, the negative pressure on the 34063 generation circuit here I do not say some in the datasheet. Here we look atSCMTwo common electronic circuit negative pressure generating circuit.

Now there are a lot of microcontrollers come with a PWM output, when we use the microcontroller PWM is not used very often, he assisted generate negative pressure is a good choice.

The above circuit is a simple circuit generating a negative pressure. He used the original is the least that we just need to give him about 1kHZ square wave can be, quite simple. It should be noted that on behalf of the load capacity of this circuit is very weak, while when a load voltage drop is relatively large.

Due to the above reasons the following circuit.

Reprinted www.diangon.com

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