Amplify uV from Sensors to mV levels for A/D Converters, which in turn may drive a display or connect to a uC means MicroController.
Now there is unicode I can write μC. Now we will break into small html lesson, paste this as html or put it in the source… μ .. you get this… μ [...]
Archive of posts filed under the Schematics category.
Amplify uV from Sensors to mV for uC
Microohm Meter with LED Analog Bar
This indicates like LM3914 in dot-mode. It is a drawing i made made to troubleshoot a gadget, around two decades ago. Strangely it had a echo of a design i had made into a 7107 dpm years before that. Now i am scanning all my drawing and notes, useful or not. Clean or with errors. [...]
Emergency Light with Fluorescent Tubes
Emergency Light for Portable Use. Note Charger and Battery not Shown. Design from Ludens.cl
12 Volt fluorescent lamp drivers: Three schematics of 12 V drivers for 2, 8 and 20 Watt, plus a lot of explanations about fluorescent tubes. Use the drivers for camping, emergency, boating, etc.
From Schoodles
Improper Design of Magnetics or Testing at low voltages [...]
One Watt Mains LED Lamp or Tubelight
Lots if Light on One Watt, yes this works, but should be built by those experienced in High Voltage usage and Knowledge of insulation techniques.
This has to be encapsulated in a insulated fire retardant plastic enclosure. You can change the values around what is indicated to experiment with types of White LED available.
This project is [...]
Powered USB Hub Help PC Interface
I got a strange problem as i added more and more peripherals, the pc gave odd messages, “i cannot detect what you are doing” and things like that. I almost flipped trying to locate the culprit. The problem was not in any peripheral but in the USB port powering the system itself. The SMPS was [...]
DiscoverCircuits free electronic circuit links
DiscoverCircuits free electronic circuit links DiscoverCircuits, has 26,000 + electronic circuits or schematics cross-referenced into 500+ categories. As a vital resource for engineers, hobbyists, inventors & consultants, the site’s collection of information will help you find quick solutions to electronic design problems.
Voltage regulator 15V 5A Dual Supply
The fig. 6.2 shows the circuit of a regulated power supply for +/- 15 V and 5 A. The output voltages are adjustable between 12 and 17 V.
A tape-wound core transformer is used. It offers a better power-to-volume ratio than conventional ones with laminated cores. The voltage control is achieved by two series transistors, connected [...]
Parallel Controlled Power Supply
Parallel-controlled circuits operate as self-controlled, variable resistors, connected in parallel to the load impedance (parallel loads). They react extremely fast and also control immediately pulses and very short mains break-downs, resulting from strong loads. These devices are preferably used in TV receivers, which have a B-class operated audio output stage. Without any parallel control the [...]
Antenna-amplifier with BFT 12 for FM-range
The only way to improve the reception of FM-signals or particularly of stereo FM-signals under disadvantageous receiving conditions is to amplify the antenna signal. This should be made directly at the antenna, since the loss is increased meter by meter of any cable. In most cases higher line attenuations can be expected than usually calculated. [...]
Model Railroad Electronics – Rob Paisley
Model Railroad Electronics – Rob Paisley
“Electronic circuits that are mostly for model railroads. Shown are designs that were developed to solve certain problems or achieve a desired control function. There are throttle, train detection, animation, control and general purpose circuits on this page.”
There are also some ideas for LEGO Brick
555 Timers pages of Rob Paisley
Soldering [...]
NE555 Applications and Specifications
NE555 Applications and Specifications
Probably the very first Datasheet and Application Note of 555 the e-lego.
Signetics made the 555, This is one IC that is like a E-LEGO, this along with Op-Amps and other components can make many interesting projects. On some pins like Control Voltage it responds to analog signals and on Reset and Output [...]
LED brightness controler – Jaroslav Belza
LED brightness controler – Jaroslav Belza
White LED lantern powered from USB port. Jaroslav Belza
delabs Notes- R1 Limits the LED current when T1 is fully Turned on or saturated. P1 forms a Variable Potential Divider, The Turning of P1 Pot gives a 0 – 5 V Variable Voltage Proportional to the turning, if it is a [...]
