The circuit diagram shows two LT1398`s from Linear Technology used to create buffered color-difference signals from RGB (red-green-blue) inputs. In this application, the R input arrives via 75 coax. It is routed to the non-inverting input of amplifier IC1a and to 1. 07-k resistor, R8. There is also an 80. 6- termination resistor R11, which yields
Click here to download the full size of the above Circuit.
a 75- input impedance at the R input when considered in parallel with R8. R8 connects to the inverting input of a second LT1398 amplifier (IC1b), which also sums the weighted G and B inputs to create a 0. 5Y output. Yet another LT1398 amplifier, IC2a, then takes the 0. 5Y output and amplifies it by a gain of 2, resulting in the +Y output. Amplifier IC1a is configured for a non-inverting gain of 2 with the bottom of the gain resistor R2 tied to the Y output. The output IC1a thus results in the color-difference output R Y. The B input is similar to the R input. Here, R13 when considered in parallel with R10 yields a 75- input impedance. R10 also connects to the inverting input of ampli er IC1b, adding the B contribution to the Y signal as discussed above The work is easy when a positive input into, The D1, D2 will does not work. The output is equal to R2 / (R2 + R3). When V1 is the input signal and R2 = R3 = R, we will have the output signal V0 = 1 / 2 V1. Later, when the negative output signal into. The D2 to conduct, but D1 does not work. When this circuit is the inverting circuit, output has values V0 = R2/R1 V1, where R1 = 2R, and R2 = R, so V0 = 0. 5 V1. This circuit changes the voltage to current, can provide dc current characteristics and AC so-so Circuit consists of 3 op-amps, 2 transistors is moderate. Passive devices and only a little. This circuit with grounded. load, it controls the rate Vout / Vin easily, it...
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: