Clip sync output to TTL level seems to take some more time to fit the extra parts on the board; as a quick fix, put a ZPD4. 7 (4. 7 V Z-Diode) between SGand ground at the POWERswitch (ring to SG) and a 1k resistor between the SGoutput from the BOTPCBand the SGpad of the power switch to clip SYNCOUTto 4. 7V : This controller is based mainly on the c
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ircuit by Thomas Schuhmann & Franz Krause. I added some improvements and simplifications (which I may have seen in other circuits, so credits go to all those nice people that contributed to the homebrew section at stereo3d. com ). PLL circuit fine-tuned for less jitter - Thomas once told me that he just used an out-of-the-box circuit for frequency multiplication, which had a far too wide frequency range (~10 kHz) to be really stable at usual V-sync frequencies (~100 Hz). I restricted the range to approx. 25. 300 Hz and get a rock-steady picture now. Automatic adaptation of generated V-Sync polarity. The original circuit didn`t care for the polarity (positive or negative pulses) of the V-sync signal, but always synchronize to the rising edge of the pulse. My circuit automagically converts the received V-sync signal to positive polarity, and the generated sync signal back to the received polarity, keeping the first edges of received and generated signal in sync regardless of polarity. Combines `the best of both worlds` w. r. t. shutter glasses driving: Like the original Cyberboy controller, I use a (spare from the sync-doubler) flip-flop to get half of the L/R switching frequency to toggle the polarity of the glasses (in contrast to the extra oscillator in the standard 4070-homebrew driver). Unlike the Cyberboy, however, I don`t use an additional negative supply voltage, but instead drive the common line for both LCDs...
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.....
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