By testing many different circuits, I ended up with the simplest ( in terms of parts count and straight signal flow) design, similar to those ` Heathkits`, with one tone control and FET buffer. From modern features - only True By-Pass switching, DC jack and LED indicator included, no noise reduction, etc. Basic model has Volume and Tone controls, gain set to maximum. It cleans up good enough with guitar volume control,
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but additional Gain control is available too, for those who prefer footswitchable presets to on-board volume knob. This beauty comes from combining several ideas - soundwise it was tweed Bassman("Tweedy"- is the first box with real tweed cover), six position varitone was inspired by old B. C. Rich Eagle guitar I played back in 1985, and uses inductor coil for tone shaping, treble booster part comes from mysterious Dallas Rangemaster. On top of everything it has three switchable gain settings - low (for humbuckers), medium and high. Varitone rotary switch acts as a select frequency mid-cut filter, which successfully emulates Fender scooped-mids sound. Input impedance is similar to a tube stage, output- less than 10K. Controls: Volume, Treble( full CCW is normal, going CW boosts highs), 6-position rotary Varitone switch: 1-tone by passed; 2- lo-mid cut; 3- mid cut; 4- hi-mid cut; 5- low cut; 6- highest gain(fuzz), mini switch- hi/low gain. I was fooling around with dividers since late seventies. At that time CMOS chips were not available, s
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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