Lighting Circuits
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The battery-operated black light uses a U-shaped, unfiltered, black-light tube, which requires approximately 250 Vac to operate. To create the 250-Vac 6-V battery, the circuit uses a one-transis-tor blocking oscillator that drives a ferrite inverter.... -
The circuit is composed of a relaxation oscillator formed by Q1 and an SCR flip-flop formed by Q2 and Q3. With the supply voltage applied to the circuit, the timing capacitor CI charges to the firing point of the PUT, 2 volts plus a diode drop. The output of.... -
The blinking or flashing rate is determined by Ul, a 555 timer integrated circuit. Its output, at pin 3, feeds U2, a HI1J triac driver. That driver consists of an infrared LED that is coupled internally to a light-activated silicon bilateral switch (DIAC)..... -
The circuit is economical in components, and will work with virtually any transistors and is reliably self-starting. The voltage Vb can be taken from a divider, as shown at the right. If taken from a fixed source, flashing becomes slower as battery voltage.... -
The combination of Ql, Q2 and Ul form a hysteresis oscillator to stabilize lamp illumination. In operation, full wave bridge D3 operates directly from the ac line to supply unregulated dc to the lamp and also to the 10 V zener that provides power to the quad.... -
Integrated-circuit Ul—an LF351 or 741 op amp—is used as a comparator to control the light. Resistors R2 and R3 provide a reference voltage of about 2.5 volts at pin 3 of Ul. When daylight falls on light-dependent resistor LDR1, its resistance is low:.... -
300 ~ 1500kW direct distribution of Lightning generator for single capacity 300-1500kW straight with the generator of Lightning FIG. 300 to 1500kW straight with a generator of .. -
22W by Ct and R, RC Buck, rectified by n. c, filtering. vz 3V DC regulated output power, before U, V2 and MIC power supply. When the audio signal to the beam, the microphone MI.. -
220V AC by the VDI-VD4 bridge rectifier to produce a full-wave pulsating voltage electricity for lights H1 ~ H4, the other side by R3 and VD4 buck regulator, C2 filtered output.. -
Simple and easy to do single flashlight battery DC-DC driver circuit and leave the battery production. Figure Parametric voltage 1.5V,.. -
220V AC by VDl a VD4 bridge rectifier, resistor Rl0 buck regulator VD5 regulator and C2, after filtering supply electricity to the manifold. Manifold output trigger signal is d.. -
220V AC by VDI ~ VD4 bridge rectifier, lights the way for Hl, H2 electricity, another pass Rl, R2 two resistors buck, limiting the capacitor CI, C2 filter manifold A power supp.. -
220V AC by VD1-VD4 bridge rectifier, all the way to supply four lights Hl - H4 electricity, another pass resistance Rl buck limit, filter capacitor C1 supply manifold A electri.. -
220V AC by VD1-VD4 bridge rectifier, all the way to eight lights H1 ~ H8 supply of electricity, the other passing RI drop pressure, VD5 regulator and filter cl A power supply m.. -
220V AC by Ri buck, Diao!. C1 chain ferry flood ear, shouted for the regulator to l2V make [C collapse. The film hand touch under ridicule the MT electrode films, clutter body .. -
220V AC by VD1-VD4 bridge rectifier, all the way to supply four lights HI ~ H4 electricity, another pass down Rl pressure limiting, VD5 voltage supply .. -
220V AC by Cl buck, VDI rectifier, VD2 regulator and filter capacitor C2, output stable 12V DC voltage for use module A2, Al through internal A2 6V regulator outputs in 6V DC v.. -
220V AC after VDI ~ VD4 bridge rectifier, the output of a point, all the way to direct electricity for lights H1 ~ H4; another way through Rl buck, VD5 regulator, about 5v DC o.. -
22, Ov AC by thyristor VSl ~ VS4 H1-H4 electricity for lights, on the other hand it down through the transformer T, VDI ~ VD4 rectifier, VD5 regulator and Cl filtered output of.. -
Street wear trench pipe installation commonly used Concealed wiring methods. The control section is installed in the front door or in the centralized.. -
Foot using a battery-powered blinking warning lights roadblocks N, can H1 Wu AC power to local roads Shi I make barricades with warning. hF555 and RP1,.. -
Family karaoke 0K lighting design of a variety of methods to control circuit, the control circuit described here is a kind of four-way light output,.. -
The circuit works as follows: every morning, light shines into the silicon photocell, generating a force, this force will transistor VT1 conduction,.. -
300 ~ 1500kW direct distribution of Lightning generator for single capacity 300-1500kW straight with the generator of Lightning FIG. 300 to 1500kW direct distribution terminal c lightning generator.. -
Circuit works: The controller consists of a power supply circuit, a control circuit and audio amplifier is composed of three parts. .. -
It uses pattern SH803 flash IC, within reservoir eight kinds of programs and a variety of dimming, change the speed of light,.. -
It uses the mains supply via a simple DC rectifier circuit... -
VDI, VD2, C3, C4 compose a simple half-wave rectifier capacitor step-down regulator circuit. After power across C3 can output 12V DC voltage of about, for the time base circuit electricity... -
Circuit works: 220 V AC by C1 Buck, DW regulator, VD whole stream, C2 filtered output 12 V DC voltage supply control circuit. IC1 time base integrated circuit NE555 and R1, Rp, C3 composed.. -
Is a light remote control light switch circuit, remote control toys can be sufficient flashlight or laser pointer. Use as long as the torch for a photo at the photosensitive resistor RL2, RI.2 resistance was low, VT2 immediately turned on,.. -
Pi is a good light can throw white moving lights circuit, it has a high sensitivity, stable performance and anti- interference good performance characteristics. Daytime photosensitive resistor RI... -
This circuit uses a dedicated voice integrated circuits Ai (SK- type), its internal features bistable multivibrator and three inverting amplifier. 555 IC A2 for the delay control...
New Circuits
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This project fits more for custom made battery casing that can have more space to hide things inside. This switch with few alterations can be used for any other project as well but is designed based on e-bike needs! This project use a clever functionality of.... -
The circuit described here uses ultrasonic oscillations and operates based on the propagation velocity of these oscillations in the air. Thus, we can easily determine the distance of two points if the time within which the wave travels this distance is.... -
Sometimes the precious metals are hidden too deep and are not detected except with complicated devices. In many cases, however, small pieces of precious metal buried near the surface can be detected by relatively simple means. Everyone is very attractive to.... -
Many times for various reasons we forget or can not water the plants that we have in our homes. And many humidity sensors units just notify us with a beeping sound or with a flashing light, that the pot needs watering. But what if we are away from home? This.... -
The principle behind a metal detector is really very simple. Proof of this is the circuit that follows, in which it proves that the construction of a metal detector can be done in the minute, with few components that we find very easily everywhere. With the.... -
The sub-harmonic bass generator is a sound producing unit for guitars. The sound it produces looks very much like that of the bass guitar. The octave generator is sometimes quite unusual since it does not produce any of the usual ways of coloring the sound,.... -
In the past the sounding (sea bottom measurement) was done with the "bullet", that is, with a heavy lead object that the seamen plucked into the sea hung from a calibrated rope. As soon as the "bullet" reached the bottom, the depth appeared directly from the.... -
This Amplifier was designed to have the following specifications: Distortion less than 0.1% at full power of 100W even at 20KHz. Power has to be attributed to an extended bandwidth. The output transistors must be protected against short circuits. The power.... -
A series of LEDs serve to alert the gardener when plants need water. Using two conventional digital integrated LEDs and a series of LEDs, we make a very useful device for gardening. The device detects the amount of water in the pot and alerts the grower.....
Popular Circuits
The circuit can be easily built to a small plastic box with telephone connectors in both ends....
A resistive voltage divider is used to establish a bias voltage for the input (Pins 2 and 3). The...
A 741 op amp is used with 100% ac and dc feedback to provide a typical input impedance of 1011...
A high signal-to-noise ratio is important in signal construction and combination. The HA-5147...
This circuit provides either latched switching or timed switching. U1A and UlB provide audio...
This circuit is capable of amplifying the output from a 150-ohm dynamic microphone to line level...
The following figure shown an example of a three-output flyback regulator built using LM2577 that...
This is a universal 1 Watt RF class C amplifier that is ideally suited for low power FM...
The cheap flashlight had a rather small (0. 22 Farad) capacitor for energy storage - not very...
Using the LM628 LM629 dedicated motion-control processors can be designed a variety of DC and...
the rest of the pictures show the construction of the sub. It was made out of two C channels...
Here`s a few details on the Infrared Remote Control Extender unit I designed and built to control...
220V AC by the step-down transformer T, a diode VDI-VD4 bridge rectifier and filter capacitor CI,...
220V mains via diode VDi half-wave rectifier, the capacitor Cl-C3 charge, since the charge is not...