Inverts to Negative From Positive Voltage by IC 555
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.
Substitutions
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
D1, D2 2 1N4148 Silicon Diode
U1 1 555 Timer
MISC 1 Wire, Board
Source : http://www.aaroncake.net/circuits/vinvertr.asp
Thank you.
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Categories: DC converter Tags: NE555 circuit, Negative power supply, positive to negative voltage converter
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