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16 Stage Bi-Directional LED Sequencer – Circuit Schematic
16 Stage Bi-Directional LED Sequencer
The bi-directional sequencer uses a 4 bit binary up/down counter (CD4516) and two “1 of 8 line decoders“74HC138 or 74HCT138) to generate the popular...
12V Halogen Dimmer – Circuit Schematic
12V Halogen Dimmer
A 12V 20W halogen lamp (MR16) and a 4. 2Ah SLA battery for my bike light system. The battery has only limited life at this power rating, so I designed this chea...
12V Dimmer – Circuit Schematic
12V Dimmer
A dimmer is quite unusual in a caravan or on a boat. Here we describe how you can make one. So if you would like to be able to adjust the mood when you re.....
120V AC Lamp Dimmer – Circuit Schematic
120V AC Lamp Dimmer
The full wave phase control circuit below was found in a RCA power circuits book from 1969. The load is placed in series with the AC line and the four dio.....
Siemens S566B Electronic Touch Dimmer – Circuit Schematic
Siemens S566B Electronic Touch Dimmer
The circuit was designed to create a lamp that incorporates the operation of a touch dimmer using S566B integrated circuit manufactured by Siemens. S566B.....
compact fluorescent lamps how to dim them – Circuit Schematic
compact fluorescent lamps how to dim them
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eec247 Information on compact fluorescent lighting – Circuit Schematic
eec247 Information on compact fluorescent lighting
The magnetic field built up in the ballast collapses quickly, producing a high voltage across the tube and causing the internal gas to conduct. It`s a bit like ...
LED current limiter accepts ac or dc – Circuit Schematic
LED current limiter accepts ac or dc
When your application requires no PWM (pulse-width-modulated) dimming or controlled frequency operation, your primary concern may be that too much current could...
Pocket white-LED torch is power efficient – Circuit Schematic
Pocket white-LED torch is power efficient
This single white-LED torch can be housed in an empty glue-stick tube and has a long rechargeable-battery life.....
LEDs Design Ideas – Circuit Schematic
LEDs Design Ideas
This slideshow is based on the LEDs Design Ideas Collection, a collection of LED-related reader submitted circuits and design applications that have appeared in...
New LED driving techniques reduce power in LCD TVs – Circuit Schematic
New LED driving techniques reduce power in LCD TVs
New design techniques in LED driver circuits promise to deliver significant energy savings that will go a long way toward helping TV manufacturers meet the toug...
triac for this light dimmer circuit – Circuit Schematic
triac for this light dimmer circuit
Hi all I made this circuit to be a light dimmer but it did not work. I use BT136 for the SCR and MOC3022 for optocoupler. Can you tell me what is the.....
BALLEST CIRCUIT DIAGRAM AND DESIGN DETAILS – Circuit Schematic
BALLEST CIRCUIT DIAGRAM AND DESIGN DETAILS
I need a circuit diagram for electronic ballast (40w,230v) transistor based circuit diagram. What are the steps taken to design a electronic ballast?.....
become a VU meter and homemade rhythm lights easy [megapost] – Circuit Schematic
become a VU meter and homemade rhythm lights easy [megapost]
Post related to Do it yourself about become a VU meter and homemade rhythm lights easy.....
Creating an HID Ballast with Constant Lamp Power Control – Circuit Schematic
Creating an HID Ballast with Constant Lamp Power Control
The HID ballast circuit includes (Figure 1) a buck stage for controlling lamp current and power, a full-bridge output stage for driving the lamp with a low-freq...
Achieve Cost-Effective LED Control with High Efficiency – Circuit Schematic
Achieve Cost-Effective LED Control with High Efficiency
Although the incandescent light bulb has dominated lighting applications since its introduction in the late 19th century, its efficiency has remained at less th...
Simple Twi-light using white LEDs – Circuit Schematic
Simple Twi-light using white LEDs
This sunlight-controlled lamp uses a light-dependent resistor (LDR) as the sunlight sensor and a total of 25 high-brightness white LEDs. Separate resistors are ...
High-intensity LED Warning Flasher – Circuit Schematic
High-intensity LED Warning Flasher
This circuit was designed as a warning flasher to alert road users to dangerous situations in the dark. Alternatively, it can act as a bicycle light (subject to...
Energy-Saving Switch Schematic – Circuit Schematic
Energy-Saving Switch Schematic
Normal operation of the light switch gives gentle illumination (LA1). For more light, simply turn the switch off and then immediately (within 1 s) on again. The...
Street Light Dimmers – Circuit Schematic
Street Light Dimmers
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