Tune six metres on your two metre receiver
Posted on Feb 12, 2013
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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The pulse repetition rate is relatively insensitive to temperature, and power supply voltage and...
When the turn signal switch SI is closed, lamp #1 will be activated and capacitor Cl will charge...
This circuit comes from U.S. Patent 3, 778,800, granted to BRK Electronics in Aurora, IL. The...
This gauge uses a sensor in conjunction with R1 to develop a dc voltage proportional to oil...
With a single IC, you can build a simple, reliable auto burglar alarm or a similar alarm. See...
Getting microprocessor designs to work is notoriously difficult when both the software and...
By no means is this a necessary addition to the benjolin but its one I`ve had some fun playing...
The top channel is my signal to the gate of a mosfet. The mosfet is driving a tank circuit that...
The TBA120 Series ICs provide a high-gain limiting IF amplifier and a quadrature coincidence...
The ISL6291 provides a low-cost integrated charger solution for single-cell Li-ion and Li Polymer...
The above table is useful to determine the capabilities of the MOSFETs for the various versions....
The ding-dong electronic doorbell circuit is composed of the power supply circuit, trigger...
The UBA is limited to discharging up to 2. 5A per channel. This discharge rate is adequate for...
As shown in FIG dividing circuit, A1 composed of a voltage-controlled current source, A2 is a...
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