Re: Simple circuit to generate 12VDC from a 9v battery?
- From: John Fields <jfields@xxxxxxxxxxxxxxxxxxxxx>
- Date: Fri, 24 Mar 2006 14:28:32 -0600
On Fri, 24 Mar 2006 13:07:03 -0600, John Fields
<jfields@xxxxxxxxxxxxxxxxxxxxx> wrote:
On 23 Mar 2006 14:09:03 -0800, "royalmp2001"
<royalmp2001@xxxxxxxxxx> wrote:
Hello everyone,
I need to generate 12vdc from a 9v square battery, cheaply and simply,
supplying about 20mA.
I have looked at DC-DC convertors, but haven't come across anything
suitable.
---
Try this: (View in Courier)
.
. +9V +9V +9V
. | | |A
. [1000R] +---+---+ [1N4148] 78L12
. | |_ Vcc | | +-------+
. +------O|D OUT|--[10µF+]-+-[1N4148>]-+--|IN OUT|-->+12V
. | | | | | GND |
. [10kR] +--|TH 555| +| +---+---+
. | | |__ _| [10µF] |
. +----+-O|TR R|O--+9V | GND
. | | GND | GND
. | +---+---+
. | |
. [10nF] GND
. |
. GND
.
---
Or, better yet,:
..
.. +9V +9V +9V
.. | | |A
.. [1000R] +---+---+ [1N4148] 78L12
.. | |_ Vcc | | +-------+
.. +------O|D OUT|--[0.10µF+]-+-[1N4148>]-+--|IN OUT|-->+12V
.. | | | | | GND |
.. [10kR] +--|TH 555| +| +---+---+
.. | | |__ _| [0.1µF] |
.. +----+-O|TR R|O--+9V | GND
.. | | GND | GND
.. | +---+---+
.. | |
.. [100pF] GND
.. |
.. GND
..
--
John Fields
Professional Circuit Designer
.
- References:
- Simple circuit to generate 12VDC from a 9v battery?
- From: royalmp2001
- Re: Simple circuit to generate 12VDC from a 9v battery?
- From: John Fields
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