valves to replace opamps in cd player
Posted on Feb 5, 2014
Related Circuits
New Circuits
-
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.....
.
The voltage regulator is an LM317T, and should accept up to about 14 volts without problems. It...
Where N is the binary number from 0 to 15 formed by the digital input. If the analog input is a...
Two complementary MOSFETs are used to deliver 20 W into 8 . A TL071 op amp is used as an input...
Build an oscillator that will satisfy a few requirements. The main requirement is to have exactly...
The audio bandpass filter described is useful for amplification and filtering weak AM TV video...
Millimeter-wave frequency bands are attractive for their wide available bandwidths. There are a...
2N3819 is an n-channel JFET especially manufactured for RF and mixer applications and provides...
Here is a very simple circuit that can be used for testing Zener diodes. The IC1 NE555 is wired...
This simple and cheap circuit is not just for Christmas! There are just two resistors, a...
For basic requirements we can use Square Wave Inverters which is very simple, low cost and easy...
This circuit be signal sound expansion from condenser microphone give with small-sized...
Even if a large number of album titles once available on vinyl are now, little by little, being...
Uses MM5316 alarm-clock IC, originally designed to drive LCD or fluorescent displays, but...
This little aid was originally designed to test the Shutter Time Meter. This meter was...
characters left: