This is the complete schematic for the circuit that is contained on the AMZ Multi-Purpose PC Board. None of the example circuits will utilize every part that has been positioned on the board. Extra parts have been included to add flexibility and options to the boards. The basic idea is to create a single pc board that can be used to make multiple
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projects, including boosters, buffers and more. If a part is not shown on the schematic or in the parts list for one of the circuits, then it is not required for that project and can be left empty on the pcb. The circular object immediately above the "Gr" designation is the transistor location (Q1). It is large enough to accomodate even a TO-5 package. The small tab on the bottom left edge is the indicator for the emitter lead. When using a TO-92 bipolar transistor (E-B-C), it should be oriented with the flat side facing to the right. This puts the emitter at the bottom and the collector at the top. The base lead will have to be bent slightly to fit in the middle hole. Note that a BC108 style transistor is C-B-E and should have the flat side facing left. Always check your transistor datasheet to find the proper pin designations. There are a few more special items to note on the pc board. First, there is a small circular pad immediately above the printed R3 designation on the board. This pad is only used for a couple of circuits and is ignored the rest of the time. Second, the R5 position has three pads in the middle between the resistor pads. These are for an optional trimpot that is used as the R5 resistor for some circuit variations. If the trimpot is not specified, the pads are ignored and the resistor soldered across the pads above and below the R5 box. Also, polarity signs have been added for C2, C3 and C4; they are...
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....
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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....
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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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