When designed with general purpose small-signal transistors, the bandwidth is 50MHz to 250MHz so very careful grounding and power supply decoupling is required. Simulation schematic for 2 transistor buffer. *Copyright Poul Petersen 2009 * *Some standard Spice stuff.
Click here to download the full size of the above Circuit.
Due to copyright issues models from other sources are not *included here. They can be downloaded from the manufacturers` *web sites. . Lib C:LIBsSpiceetex_dl. lib * *Signal generator VIN 101 0 AC 1 SINE(0 5 1000 0 0 0) * *Power supply Vcc Vcc 0 30 * *Load resistor value. PARAM Rl=10K. STEP PARAM Rl LIST 100 1000 10000 *100R load resistance is included to emphasize the clipping of the *single transistor circuit. Cross over distortion is very high into *100R for the 2 transistor circuit. * *Single transistor buffer. R111 101 11 1 ; Series resistor from generator. C11 11 12 10u R11 Vcc 12 47K R12 12 0 47K Q11 Vcc 12 13 ZTX653 ; from R13 13 0 3K C12 13 14 220u R14 14 0 {Rl} * *2 Transistor buffer with single supply. R121 101 21 1 ; Series resistor from generator. C21 21 22 10u R21 Vcc 22 47K R22 22 0 47K Q21 Vcc 22 24 ZTX653 ; from R23 24 0 5. 9K Q22 0 22 23 ZTX753 ; from R24 Vcc 23 5. 9K C22 23 25 100u C23 24 25 100u R25 25 0 {Rl} * ;. DC TEMP 0 70 10. AC DEC 10 100m 1MEG ;. NOISE V(25) VIN DEC 10 10 100K ;. TRAN 2m. PROBE. END *
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: