您可以使用此简单的警报来保护门或窗户。当入侵者/小偷试图打破门锁时，它发出了大声的哔哔声，并打开房间的灯。警报仅在5分钟后起作用，以使入侵者混淆。此防盗警报电路的工作很简单。IC1习惯了…

该电路可以保护您的电子设备（例如电视）免受Inrush电流的影响。由于开关中的火花，由于分配变压器中高磁场引起的功率故障后，电源恢复时会发生更严重的效果，因此可能会发出非常高的尖峰。当我们将电视保持待机模式时

This circuit can sense the overload condition and breaks the power if the load increases above the set point. It is an ideal circuit to protect Uninterrupted Power Supply devices like Inverter.Let us see its working …The Optocoupler MCT2E and the Resistor R3 (1 Ohm 10 Watts) will do the trick. The Optocoupler has an LED and a Phototransistor inside with connecting leads. The LED of MCT2E is connected parallel to the resistor R3 with a current limiter R2 for the LED. The phototransistor of Optocoupler is connected to the transformer derived 9 volt DC through the current limiter R1. The load is connected through the Common and NC contacts of the relay. So it will work normally at power on.

This light triggered circuit can be used to turn on / off a load such as lamp through the IR rays from a remote or light from a torch. This is an ideal circuit to switch on / off the room light using TV remote while watching the TV .The circuit uses a Phototransistor and…

每个人都必须熟悉该术语 - 切换模式电源或SMP。是的，它们用于每台个人计算机中。实际上，开关模式电源被广泛用于许多其他设备。一旦了解到SMP的实际是什么，就可以很容易地想象其无数的应用程序。SMP用于有效地转换电子电源。任何SMP都有一些存储组件，它们将电能存储在负载设备中，并且一些开关组件以高频充电和排放存储组件以高频打开和关闭。

电子设备对馈送给它们的电源的波动非常敏感。可以通过为其使用调节的电源来解决此问题。此[[wysiwyg_imageupload ::]]关于电源电路的项目配备了可调电压调节器，以根据要求调整输出。可调电压调节器具有线路和负载调节，比标准固定调节器更好。该电路是使用以下主动和被动电子组件制成的：1。桥梁整流器2。电阻3。电容器4.可变电阻5。线性电压调节器IC

Voltage regulator is a device which provides fix output voltage in spite of the variable input voltage supplied. It is a three terminal device. Voltage [[wysiwyg_imageupload::]]regulator basically comes in two different series: 78XX and 79XX. Voltage regulator under 78XX series are designed for positive inputs i.e. if while 79XX series are designed for negative inputs.

此处显示的电路太容易了。在此电路中，IC1以异常模式安装。在恢复功率时，通过电容器C1的IC1的引脚2处于低位，并且相同IC开关的引脚3到高。在IC1的引脚4中，它是一个重置引脚切换到高状态大约10秒钟。当C1处的电压达到所提供的电压的2/3时，电容器开始排放并输出转换为低，将引脚4接地，这是一个重置引脚，因此跌倒电路脱离了动作。

该电容器电源可以传递12伏直流电和100 mA电流到电源低电流设备。它具有电涌保护性，并使用两个相位和中性线中的两个电容器完全与主电源隔离。因此，即使相位和中性线变化，连接的设备也是安全的。变压器…

Transformer is an electrical device which works on the principle of Faraday’s law of electromagnetism used to step up or step down the input [[wysiwyg_imageupload::]]voltage.Transformers are of different types for example: Power transformers, Current Transformers, Potential Transformers, Pulse Transformer, RF Transformer and Audio transformers. The most common application of Current transformer is to reduce the current and provide galvanic isolation in current sensing devices. Some typical examples include SMPS, motor control and electronic lightning ballasts.Some of you would know how a current transformer works. Windings, Core, connections and other things which many of you have surely seen in the books or in the diagrams.But how many of you have got the chance to see how actually it looks from inside. A small instrument but which works greater than its size. In today’s insight you will know how current transformers are made to work.

在当前的技术场景中，对产生的气体的监测非常重要。从空调等家用电器到工业监测气体的电动烟囱和安全系统至关重要。气体传感器是此类系统中非常重要的一部分。像鼻子一样小，气体传感器自发地对存在的气体反应，从而使系统更新有关在气态状态下分子浓度中发生的任何变化。气体传感器的规格广泛，具体取决于灵敏度水平，要感应的气体类型，物理尺寸和许多其他因素。这种洞察力涵盖了一种甲烷气体传感器，该传感器可以感觉到氨基的气体，例如氨可能会从甲烷产生。当气体与该传感器相互作用时，首先将其电离为其成分，然后被传感元件吸附。这种吸附在通过电流形式通过输出引脚传达给处理器单元的元素上产生了潜在差异。这个感应元素是什么？它保留在某个房间中还是被暴露？ How does it get current and how it is taken out? Let’s find out in this Insight!!!

Shopping carts are handy, but all these carts require a push or pull to move around. How about we create a battery-operated cart that doesn’t require human efforts? In this project, we will design a mini motorized battery-powered shopping cart using four DC motors attached to four wheels, which can be controlled using a Bluetooth…

The proposed simple electronic spy Bug circuit is basically a high gain amplifier using the IC 741 as the heart of the circuit and also a couple of high gain output transistors. The IC 741 if configured as a non-inverting amplifier which performs the function of a pre-amplifier stage. The gain of this IC 741 preamplifier stage may be varied as desired, using the pot across its input and output pin outs. The gain setting is used to set the sensitivity of the amplifier and is set to maximum so that even low volume speech conversation may be picked through it. The mic at the input transforms sound vibrations into minute electrical pulses, which is further amplified by the IC 741 to suitable levels before applying it to the output amplifier stage consisting of a standard DARLINGTON stage. This Darlington stage is made using a couple of high gain transistors bc107A’s.

我们中的许多人都有模块化的厨房，这些厨房有烟囱可以提取烟雾，因此烟气不会充满厨房，并避免烟雾对家具和厨房用具的有害影响。但是有时候，我们忘记打开烟囱，这会导致厨房烟雾，有时我们忘记了烟囱，导致电力和金钱浪费。因此，为了解决这个问题，我们描述了一个电路，该电路将在烟雾到达并自动指向风扇时自动打开风扇。您还可以在焊接时使用此电路在风扇上提取出现在房间中的烟雾，留下无烟区域。

简单的脉冲调制技术的脉搏Amplitude Modulation (PAM) proved to be more power efficient than the PWM and consumes constant power for individual pulses like PPM. In PAM the amplitude of the individual pulses are varied according to the amplitude of the modulating signals. The PAM modulator and demodulator circuits simple compared…

在大多数房屋中，门铃是常规的叮当型。我们大多数人都不喜欢它的声音。由于具有弹簧机制的机械运动部件，因此长期耐用性值得怀疑。我家里还有一个这样的门铃。一段时间后，其性能恶化，有一次由于其嘈杂的刺激性声音而变得完全无法忍受。市场上可用的新型门铃是鸟音铃。它们的成本很高，甚至我不喜欢它，因为它的频率高和高音量的声音输出。

您可能会意识到的许多不同类型的机器人项目包括以下内容：遥控机器人（CAR型3/4轮）操纵杆控制的机器人手势控制机器人智能手机（蓝牙）控制机器人障碍物避免机器人机器人机器人对象追求对象追随者对象追随者机器人机器人机器人对象Finder Robot机器人手臂挑选和放置机器人，还有更多本文也描述了一个…

曾经想知道电线如何连接到连接器。如何连接到连接器段的不同数量的电线？像其他任何小工具一样，又称耳机，耳机，麦克风的连接器插孔在工程书中也具有同样有趣的章节。它是最便宜的部分之一，但在技术上不是劣等的部分。它值得从工程师的设计和质量来看。该连接器在移动，笔记本电脑，音乐播放器等设备上的tran弗送达信号的重要组成部分，到耳机和麦克风，反之亦然。即使是一个小问题，也可能导致该设备的典范体验。连接器具有三个触点/段/零件，称为尖端，环和套筒。因此，它也称为TRS连接器。

In the previous tutorials, it was learnt that sequential circuits require memory elements to retain previous states of a digital system. The flip-flops and registers were then introduced as building blocks of memory in a sequential circuit. The registers are enough to store runtime data in small microcontrollers and ASICs. The complex computing systems require digital memory to not only store runtime information (as stored by registers in a microcontroller) but to store programs and data permanently within the digital system. So, they require dedicated memory either internal or external.