An alternative to the infamous ROG `s Ruby amp. As you see it shares with the Ruby the same topology: a buffer and a chip amp. It uses a JFET buffer with a MPF102 and the 1W TDA7052 chip. It is a clean amp and it reacts very well with any pedal in front of it. I don`t use a lot of distortion so this little amp suits all my needs. It doesn`t have a volume and tone control because I wanted a plug-in-and-play amp.
Click here to download the full size of the above Circuit.
If you want an amp with a volume control try the TDA7052A, it has a volume voltage control pin that works perfectly (simple pot), this chip has the advantage that the volume pot is not on the signal path. Of course the PUNCH also works with batteries, a 9v battery or with six 1. 5V batteries in series. For small voltages and currents the sound could become distorted or to muddy, if so decrease the 1u cap to 470n or smaller. What speakers do you recommend for use with your mini-amp circuits While the Ruby, Little Gem, and Little Gem MkII practice amps can be used with any speakers, best results are achieved with full-size speakers intended for use with guitar amps. The amps will work well with an total impedance of 4, 8, or 16 ohms. We`ve tried hi-fi speakers, clock-radio speakers, and auto speakers - they just can`t cut it. For me, using anything other than a speaker designed for the frequencies of an electric guitar produced sounds more like a toy than an actual amp. However, you may want to ask at Aron`s Stompbox Forum. Many of the members have built one of the aforementioned amps and may be able to suggest a decent-sounding small speaker. This is only in part true. One thing they are right is that clock-radio speakers and small radio speakers won`t work! But the same is not true for hi-fi speakers and auto speakers. Let me be more precise about it. I`ve tested the PUNCH and the Ruby with some 6`` auto speakers and they...
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.....
characters left: