Simple Transistor Reflex Receivers
Posted on Jul 15, 2012
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.....
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A 15 watt amplifier made using discrete components. Sergio designed this circuit for his...
This switch will suit the Modular Burglar Alarm circuit. However, it also has other applications....
A cathode follower based on the 6BL7 or 6BX7 is ideal for output. I used a mu-follower circuit...
This circuit can be built small enough to frt inside a toy. The circuit consists of a relaxation...
Has an input resistance of 1-MO, a bandwidth from de to about 35 MHz, and a gain of 10 times....
By inserting a high-pass filter section in the IF lead, this mixer is terminated at all...
ICl is a 555 timer running at about 16 kHz. This IC drives Ql, a TIP146, which produces a 12-V...
This circuit is intended to signal, through a flashing LED, the exceeding of a fixed threshold in...
555 timer circuits LM555 - Astable Oscillator Calculator + Capacitor Calculator, Basic Circuits...
This is a step by step guide to modifying the disposable camera flash unit that powers the Geiger...
This is an article written by a one of my readers, Yash Tambi, Core Committee Member, roboVITics....
Components like resistors R1 and R2, capacitors C1, C2, and C3, diodes D1 and D2, and zener ZD1...
Propclocks are really pretty complex devices, utilizing a PIC microcomputer that performs...
This circuit uses just one IC and a very few number of external components. It displays the audio...
This type of voltmeter is very common because of its low cost. This instrument can be used only...
This circuit is maintain a constant voltage, the output voltage is adjustable. Serves to reduce...
I got frustrated and decided to hook it up to a 15v supply and jump R3 with a clip-on soldering...
This inverter can deliver high-voltage ac or dc, with a rectifier and filter, up to several...
Exars XR-L555 circuit typical power consumption is 900 W, the power supply voltage of 5V,...
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