As shown by a circuit TTL hex inverter can constitute a DC/DC converter, the 5V into 12V. This circuit provides all the functionality required for DC/DC conversion. The circuit
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relies TTL switching threshold voltage regulator. U1A and U1B formed oscillator switching frequency 1MHz. The oscillator output drives three parallel inverter U1C, U1D and U1E, provides high output current and output power. Its internal output transistor, L1 and D1 form a standard boost converter, when the output is low, the current will flow through the inductor L1; when its output goes high, the energy stored in the inductor forces the anode of D1 becomes high, D1 conducts to charge C1. U1F monitor the output voltage feedback resistors R1 and R2 on the partial pressure, when the C1 voltage is higher than 12V, U1F TTL logic input exceeds the threshold (approximately 1.2V), U1F output goes low, inhibit voltage continues to rise; when the output voltage landing is less than 1.2V, U1F closed again to allow the oscillator driver switching power supply. The circuit line and load characteristics of better than 1%, the output voltage in the range of 0 ~ 50 only 7%. 7406 requires the use of open-collector hex inverter, the inverter can output 30V, 40mA, so the three parallel switch can drive 120mA peak current.
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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