I read Doug Grant`s article regarding Heathkit in his Blog via the EDN Network. Doug reminisced about building his first Heathkit and how much he learned. He suggested that every EE had at least one kit and I suspect he is right. However, as Doug pointed out, Heathkit eventually faded away. I built a number of kits, including an oscilloscope, a so
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lid-state FM tuner and amplifier and a color TV. All worked fine and found lots of use. But the real advantage was the first-hand learning experience & knowledge gained in building the kits. The building instructions were always clear and the circuit operation explanations were my first real learning experience in electronics. Just learning how to solder was a valuable experience! Doug`s Blog provides a link to someone who may be considering offering the kits again and he also offers his suggestion for a new kit. A lot of comments follow the Blog offering individual experiences with Heathkit and related suggestions. I feel that they offered an excellent product for that time period and I am glad I had the opportunity to learn by building their kits. CSS Engineers have teamed with Sarnoff/SRI in the design of a CMOS image sensor that is slated to be aboard the Naval Research Laboratory s Solar Orbiter Heliospheric Imager (SoloHI). This work is a continuation of a long teaming relationship with Sarnoff, having completed 16 earlier tape-outs of new designs. This will be the first time such a large format APS detector has flown. The instrument will make high-resolution images of the corona and solar wind, including coronal mass ejections (CMEs), to determine how they propagate and interact with the background solar wind. With its large field of view, SoloHI will be able to connect the remote sensing observations of the...
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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