通过NE555产生负电压-----ne555 inverter
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本文介绍了如何使用NE555制作负电压产生电路,电路简单,取材容易,唯一缺点是输出电流小,输出电压不稳压,可在要求不高的场合使用。
This simple circuit is a good solution to the powering a dual supply op amp from a single battery problem. The circuit simply takes a positive voltage and inverts it. It uses only one 555 timer and a few other passive components, so it doesn't add much in the way of size and cost to a project.
元件清单:
R1 | 1 | 24K 1/4 Watt Resistor | |
R2 | 1 | 56K 1/4 Watt Resistor | |
C1 | 1 | 3300pF 25V Ceramic Capacitor | |
C2 | 1 | 47uF 25V Electrolytic Capacitor | |
C3 | 1 | 10uF 25V Electrolytic Capacitor | |
C4 | 1 | 100uF 25V Electrolytic Capacitor | |
D1, D2 | 2 | 1N4148 Silicon Diode | |
U1 | 1 | 555 Timer | |
MISC | 1 | Wire, Board |
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