As shown for the low-frequency output 7W power amplifier circuit. The circuit uses a FET input type operational amplifier LF356 integrated as a voltage amplification. The class
Click here to download the full size of the above Circuit.
as a transistor amplifier circuit composed of the driver stage. Illustrated circuit has adopted a large negative feedback loop, which feedback resistor R2 is 100k, input terminus C1 (1 F) and R1 (10k ) constituting the coupling circuit. The AC component of the input signal is applied to the op amps inverting input (pin 2), the voltage can be seen, the circuit magnification: Av -R2/R1 -100/10 -10. Stage amplifier circuit composed of complementary symmetry circuit by the transistor, the transistor connected to form a composite tube, transistor VT1 and VT2 can be 2SC1815, VT5 and VT4 can be used 2SA105, VT3 selection 2SD525, VT6 use 2SB595, after the amp has an overcurrent protection circuit If amplifier tube VT3 (or VT6) output current is too large, then the emitter 0.5 resistor R7 (or R8) will have a greater voltage drop, its polarity is positive on the negative. The voltage applied to VT1 (or VT4) between the base and emitter, so VT1 (or VT4) positively biased conduction (when the external load short-circuit, the saturated conduction), VT1 to VT2 conduction from diversion effect, make VT2 (or VT5) base current decline, thus limiting the VT3 (or VT6) of output current to prevent it from being damaged due to excessive current. Due to the large VT3 and VT6 power, you need to install the radiator.
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: