Welcome to Jose Pino's Circuits And Information!

Web Pages on this category:

555 Circuits
Basic circuits and information about this timer/oscillator. (11/6/2006)
555 Circuits II
Some useful circuits using the LM555 IC. (11/26/2006)
AC LEDs.
Some useful Circuits with LEDs using the AC voltage. (5/28/2006)
Computer to TV adapter.
Simple adapter to connect an old computer with CGA video graphics card to any TV. (11/26/2007)
Diode Circuits
A collection of simple but useful circuits made with silicon diodes. (6/14/2006)
Emergency Light.
A simple circuit that activates a light when the power is out. A version with a lightbulb and another with white LED light included. (6/25/2006)
Fluorescent Light.
How to build a 4-Watts Fluorescent light using a disposable camera, powered by one 1.5 Volts battery. (5/29/2006)
FM Microphone.
A micro-transmitter is so small and sensitive, it have only 8 easy-to-get parts and can be assembled in one hour. (6/3/2006)
How COLD HEAT Works?
This "Hi-tech" soldering tool looks like a miracle. Does it Really Work? (7/13/2005)
Homemade COLDHEAT.
My first attempt to build a homemade "ColdHeat" soldering tool. (7/8/2006)
How Battery-free Flashlights Works.
It sound too good to be true. Let's see how these battery-free flashlights works. (5/20/2006)
How To Make a Speaker
A homemade speaker using a plastic cup, business card, wire, magnet and some Lego blocks. I built this speaker from scratch; I was surprised of the quality of the sound. Updated! (6/14/2007)
LCD GD-1505 AP
Technical information about this LCD display. (4/22/2006)
LED Chaser.
A LED chaser using a CMOS 4017 and a 555. (5/28/2006)
Logic Probe.
An useful and easy to build Logic Probe with Pulse injector. An schematic of a "digital version" is included.
Mini Amplifier with LM386.
The LM386 is a low voltage audio power amplifier, simple and easy to build a mini amplifier with only a few components. (7/3/2006)
Ni-Cad Battery Charger with LM317
A simple circuit used to charge old Ni-Cad cells for your electronic project. A solar version of the battery charger included. (3/3/2008)
One Second Timebase.
Here are the instructions how to get one-second (1hz) pulses from a broken quartz clock. This is a precision timebase generator that can be used in any project that needs exactly one-second pulses. (6/11/2006) Updated!
PWM using 555.
A simple oscilator with PWM that can be used to control speed of motors or light intensity. (4/29/2006)
Resistors
How to read the color codes of the resistors and tips. (6 25 2006)
Displays: LED Matrix
Information for the Common Anode LED Matrix Display for SA04-11EWA, NFM-12882BEG-11, LEDM88RG (Updated 7/3/2006)
Strobe from Flash.
After using a disposable camera, you can build a strobe light (flashing light) with one simple modification. (6/2/2006)
Tachometer Circuit.
A simple tachometer circuit using one NPN transistor. (12/04/2007)
Traffic Light.
A two-way traffic light using a CMOS 4017 and 555. To be used as toy only. (4/23/2006)
Transformerless Power Supply.
Simple, low cost and easy to build power supply. Ideal for applications that doesn't requiere too much power. (5/28/2006)
Transistor LED Flasher
A simple LED flasher that uses only two transistors, one capacitor and one resistor. This basic oscillator can have other simple applications. (6/10/2006)
USB LED Light.
A simply and easy-to-make circuit, useful when working with the computer at night. (6/8/2006)
Where to get parts.
Tips to get cheap parts and some parts distribuitors than sell good and inexpensive parts. (6/10/2006)

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12/08/07 - 06:21:10 - Siddheshwar from India wrote:
Dear Sir,
all projects are very good. But i have problem that in India there is 240volts & all projects are for 110v
Pls Help regarding this
Thanks in Advance
SID
---------------------
12/25/07 - 15:54:15 - matias from wrote:
the proyect that the very simple construction
the reality problems of construction to the experiment board its not sitonized on my digital radio
very good quality the construct in the fonolitic consrtuction board thank you for the expemiment
---------------------
02/18/08 - 10:40:50 - rathinavel from chennai wrote:
emergency light
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03/28/08 - 23:01:29 - fereto from united states wrote:
where can you get a spectrum analyzer for less then 51 dallors
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04/15/08 - 10:06:15 - TILANA from london wrote:
HI, I wonder if you could help me, im trying to see if it is possible to make a device or buy a device that you could manipulate the device in order to cut some frequencies out or a OCTIVE for example, if the one frequency is higher than the other could you manipulate this so it sort of blocks it automatically, on that certain octave, or frequency.

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Web Pages on this folder:

· 555 Circuits
· 555 Circuits II
· AC LEDs.
· Computer to TV adapter.
· Diode Circuits
· Emergency Light.
· Fluorescent Light.
· FM Microphone.
· How COLD HEAT Works?
· Homemade COLDHEAT.
· How Battery-free Flashlights Works.
· How To Make a Speaker
· LCD GD-1505 AP
· LED Chaser.
· Logic Probe.
· Mini Amplifier with LM386.
· Ni-Cad Battery Charger with LM317
· One Second Timebase.
· PWM using 555.
· Resistors
· Displays: LED Matrix
· Strobe from Flash.
· Tachometer Circuit.
· Traffic Light.
· Transformerless Power Supply.
· Transistor LED Flasher
· USB LED Light.
· Where to get parts.

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