Diagram Plus guide

while many power supplies can be set to limit their output current to a defined level, to protect the circuit they are powering, no such protection is available if you are powering a circuit from a battery. If a fault develops, the circuit can blow before you have a chance to disconnect it. Of course, you can fit a fuse in series with the supply line to the circuit under test but it will blow if a fault develops. Or perhaps it won’t blow sufficiently quickly to protect the circuit. And repeatedly...

This is a straightforward flashing milds circuit can be used as beacon. The meeting consists basically of two blinking steps that commands two mild bulbs. With the lend a hand of P1 that you might be ready to adjust the flashing frequency between some restricts. There are 2 phases for the circuit, the 2d works the comparable manner as the opposite but with the lend a hand of a wire bridge or a switch that you could select different working modes.A bridge between M and three means: 2 unbiased...

The alarm may be used for a variety of applications, such as frost monitor, room temperature monitor, and so on. In the quiescent state, the circuit draws a current of only a few microamperes, so that, in theory at least, a 9 V dry battery (PP3, 6AM6, MN1604, 6LR61) should last for up to ten years. Such a tiny current is not possible when ICs are used, and the circuit is therefore a discrete design. Every four seconds a measuring bridge, which actuates a Schmitt trigger, is switched on for...

Although 60/40 solder softens at about 200°C, the tip temperature of a soldering iron must be at about three70°C. This is important to make a just right fast joint, without the danger of overheating refined parts because the iron needs to be saved on the joint for too long. Unfortunately, at this temperature, the tip oxidises swiftly and needs constant cleaning. Thats the place this circuit can help - it preserves the soldering tip to simplest beneath 200°C while the iron is at leisure. Oxidisation...

This digital SP tachometer for bikes uses 2 reed switches to urge the speed data of the bicycle. The reed switches are put in close to the rim of the wheel where permanent magnets pass by. The permanent magnets are connected to the wheelspokes and activate the reed switches everytime they pass by it. The speed is digitally displayed.The tachometer circuit works in step with this principle; the pulses created by the reed contacts are counted inside an explicit time interval. The ensuing count...

As we are like to indicate you about audio and sound circuit ,I found the circuit which is just right one for energy amplifier with one MOSFET.The output power of an operational amplifier is regularly elevated by way of a complementary emiter follower.20W energy amp MOSFETIt can be carried out with a MOSFET,but it's not a excellent suggestion to join the type of instrument as a complementary souce follower because the maximum output voltage of the opamp is then decreased extensively by way of...

CONSTANT BRIGNESS LED AND MUTE CONTROL ELECTRONIC DIAGRAMThe output power of the modules are approximately 220W to 250W into 8? and 350W to 400W into 4?. Complete documentation for the amplifier modules can be found in the documents listed below. AN-1850 LME49830TB Ultra-High Fidelity, High-Power Amplifier Reference Design Although the power supply design is specific to the amplifier modules the concepts and circuit design may be used for any power supply purpose. The power supply is an unregulated...

The author wanted a very cheap and simple alarm for some of his possessions, such as his electrically assisted bicycle. This alarm is based on a cheap window alarm, which has a time-switch added to it with a 1-minute time-out. The output  pulse of the 555 replaces the reed switch in the window alarm. The 555 is triggered by a sensor mounted near the front  wheel, in combination with a magnet that is mounted on the spokes. This sensor and the magnet were taken from a cheap bicycle...

The pulser is intended to change the primarys voltage on and off at intervals between just below a 2d and as a lot as 10 minutes. This comes in handy, for instance, when a chiefs-operated gear is to be tested for lengthy periods, or for lengthic switching of equipment. Transformer Tr1, the bridge rectifier , and regulator IC1 present a stable 12V provide rail for IC2 and the relay. The timer is arranged so that the length-determining capacitor may additionally be charged and discharged independently....

This is a circuit diagram of a powerful 12V regulator. The circuit can deliver up to 15 A of current. The circuit is based on work of the LM7812 IC as the core of the circuit. This is the figure of the circuit.The common voltage regulator IC 7812(IC1) is used to keep the voltage at steady 12V and three TIP 2599 power transistors in parallel are wired in series pass mode to boost the output current.The operation work of the circuit is the 7812 can provide only up to 1A and rest of the current is...

1998 Isuzu Rodeo 3.2 6 cyl Wiring DiagramThe Part of 1998 Isuzu Rodeo 3.2 6 cyl Wiring Diagram: red wire, coil contact, headlight relay, connector, relay ctrl, fuse box, rear wipper, starter, theft horn, black wire, horn, haz...

Here is a simple circuit that starts playing the car horn whenever your car is in reverse gear. The circuit (refer Fig. 1) employs dual timer NE556 to generate the sound. One of the timers is wired as an astable multivibrator to generate the tone and the other is wired as a monostable multivibrator. Circuit diagram :  Fig. 1: Car reverse horn Circuit DiagramWorking of the circuit is simple. When the car is in reverse gear, reverse-gear switch S1 of the car gets shorted and the monostable timer...

The series of Universal PIC Programmer can be used with software IC-Prog 1:05. Universal PIC programmer circuit is very simple with BC337 transistor 1 fruit, 2 pieces of IC regulators 7805 and 7808 as well as supporting passive components. Universal PIC Programmer series can be supplied with 2 pieces of 9V batteries.For communication with computer circuit Universal PIC Programmer uses a serial RS232 port of computer. Then for the PIC to be programmed provided 5 lanes for the PIC that is DATA, Clock,...

GDT’s are special type of gas filled tubes used for wide range of electronic/electrical circuits for providing protection against lightning and other power surges.  These tubes basically has two electrodes that are kept inside a gas filled closed envelope. In case of electronic applications, the container is mostly ceramic in nature. For high grade electrical applications military tubes are used. The electrical characteristics of this tubes depends on the pressure and composition...

1994 Chevrolet S10 Blazer(click for full size image)The Part of 1994 Chevrolet S10 Blazer Wiring Diagram: shunt, fuse block, rear defogger, engine ground, indicator, rear window strut, panel lamps, circuit break...

A rectangular-wave pulse generator with an extremely long period can be built using only two components: a National Semiconductor LM3710 supervisor IC and a 100-nF capacitor to eliminate noise spikes. This circuit utilises the watchdog and reset timers in the LM3710. The watchdog timer is reset when an edge appears on the WDI input (pin 4). If WDI is continuously held at ground level, there are not any edges and the watchdog times out. After an interval TB, it triggers a reset pulse with...

The adjustment control for the contrast of an LC-Display is typically a 10-k potentiometer. This works fine, provided that the power supply voltage is constant. If this is not the case (for example, with a battery power supply) then the potentiometer has to be repeatedly adjusted. Very awkward, in other words. The circuit described here offers a solution for this problem. The aforementioned potentiometer is intended to maintain a constant current from the contrast connection (usually...

Vertical Protectors (another term surge protector or Vertical CRT Neck Guard or protector) . If the vertical deflection does not work, then the raster will glow a horizontal line. This can cause the picture tube phosphor layer was destroyed by fire when the aircraft be kept alive in the long term.There are several types of system protectors, vertical relationships:Protector surge protector is connected with x-ray to the horizontal which will trigger the horizontal oscillator is not workingProtectors...

These days many more audio-visual devices in the home are connected together. This is especially the case with the TV, which may be connected to a DVD player, a hard disk recorder, a surround-sound receiver and often a PC as well. This often creates a problem when earth loops are created in the shielding of the video cables, which may cause hum and other interference. The surround-sound receiver contains a tuner that takes its signal from a central aerial distribution system. The TV is also connected...

This circuit can be used for inductive pick-up elements and dynamic microphones Most soundcards have a ‘line’ input and one for an electret (condenser) microphone. To be able to connect an inductive tape-recorder head or a dynamic microphone, an add-on preamplifier is needed. Even in this day and age of integrated microelectronics, a transistorised circuit built from discrete part has a right of existence. The preamplifier described in this short article goes to show that it will be some time before...

Stairways, corridors or small indoor passages often tend to be dark throughout the day irrespective of the outdoor ambient light conditions. Therefore keeping such passages illuminated all the the time becomes imperative, however this leads to unnecessary wastage of electricity. An innovative way of solving this problem has been discussed in this article, by employing a clap operated momentary light switch circuit.The circuit diagram may...

Here the simple traffic light controller which is could be used to educate kids rudiments of traffic light guidelines. The circuit utilizes easily available electronic parts. It generally consists of rectifier diodes (1N4001), a 5V regulator 7805, two timers circuit using IC 555, two relays (5V, single-changeover), three 15W, 230V light bulbs and also several discrete parts.Traffic Light Controller Circuit diagram :Mains electrical power is stepped down by transformer X1 to provide a secondary output...