Voltage Detector Circuits
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As shown in the figure, the temperature detection, temperature-voltage switch and voltage-frequency switch circuit is used to remote detect temperature. We connect the circuit and wireless transmitting circuit forming a temperature detection remote control.... -
LTC6101 op-amp can be used to build High voltage current monitoring/sensing. This circuit can senses current in 500 volts system. Here is the schematic diagram.... -
The circuit diagram of the non-contact voltage detector is shown on the figure 1. It consist of two parts - the AC amplifier and the audio oscillator, based on the Schmitt trigger DD1. 1 of IC CD4093 with the network R7C2, which determines the frequency of....
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.....
Here is the latest and greatly improved TX200 VFO/VCO FM transmitter. The most versatile...
Using the TB2922HQ audio power IC can be designed a very simple and high efficiency power audio...
This is the latest BH1417 FM Transmitter design from RHOM that includes a lot of features in one...
An infra-red or wireless remote control has the disadvantage that the small, handy, remote...
Used on an amateur or experimental radio beacon, the above ID circuit will generate any callsign...
A ascends a route while Climber B stays on the ground and tracks Climber A`s progress with the...
Here the simple mixer with 4 input and 2 op-amps: A basic mixer suitable for mixing microphones...
A circuit that will block my TV and any device I choose from getting a signal from the normal...
The debate still goes on as to which are better, valves or transistors. We don`t intend to get...
Two NPN transistors - models 2N2222 or 2N3403 recommended. Larger "power" transistors may not...
A schematic diagram of the oscillator is shown in Fig. 1. The common-base transistor stage (Q1)...
It consists essentially of three stages and gives the antenna a power of 300 WATT, provided it is...