Circuits & Schematics: Design - 6

51. Car PSU
    Circuits Automotive Supply Power
    .. I only had 14 pin SOP versions so I used a DIP header and hacked it in. Three type of protection are incorporated in the design. First is a 6 amp Polyswitch fuse, it is self-resetting, and also protects against high temperatures. Next is ...
    31-10-2007

52. Electronic Breadboard Templates
    Circuits Tools and Technologies
    .. markings and a fix to an Inkscape PDF export bug. The fix is required because I use a clipping object in the board design. The holes on the board are made up of clones of 5 x 5 sets of holes (themselves cloned from a single hole) ...
    30-10-2007

53. Find Hex-Code Values for Microcontroller's ADC Voltages
    Circuits Microcontrollers Usage Theory
    .. 8-bit microcontroller programming with a simple formula to calculate hex values of ADC output. This Design Idea is for low-end, eight-pin, flash-memory, 8-bit microcontrollers, such as the MC68HC908QT4A from ...
    04-11-2007
54. Circuits Monitor and Balance Large Lithium-Ion Batteries
    Circuits Supply
    .. self-discharge rates eventually lead to unequal levels of charge. Therefore, you must correct the cell balance. This Design Idea provides one strategy for protecting and balancing large, high-voltage batteries. The circuit in Figure ...
    14-11-2007
55. Versatile Digital Speedometer Uses Few Components
    Circuits Measurement Domestic
    .. mechanical and moving-magnet designs that use analog moving-pointer displays, the electronic speedometer in this Design Idea features a digital readout and a power-saving device that uses few components. Figure 1 shows the ...
    14-11-2007
56. Make your own Solar Bag
    Circuits Domestic Solar
    .. this part of the project: A bag. Either you transform one of your bags or you look for a new one that looks cool and has a design that makes it easy to integrate a solar panel. The later was the way we choose. A solar panel. Our ...
    16-11-2007
57. Simple Digital Filter Cleans Up Noisy Data
    Circuits Measurement
    .. time constant of minutes would require very large values for R and C. Figure 1 shows an analog RC lowpass filter and its design equations. As an alternative, you can clean up noisy signals that remain within the ADC's linear range by ...
    28-11-2007
58. Lowpass filter has improved step response
    Circuits Analogue Design Maxim MAX7409 MAX966
    .. common problem that arises when you design lowpass filters for signal conditioning is the filters' effect on the system's time-domain response. ...
    06-10-2022
59. PWM DAC settles in one period of the pulse train
    Circuits Oscillators Microcontrollers Usage Texas Instruments TL071A LF398-N OPA2277. CD74HC02
    .. difficulties. The most important detail is that there are no suggestions on how to make the adjustment automatically. This Design Idea presents a circuit and a straightforward procedure to fill the gap. Using this method requires only one ...
    07-05-2020
60. Extreme Business Cards
    Circuits Domestic Cellular
    .. well. You can of course use a specialised PCB package, but I wanted an unusual cursive font on mine, so just hand-drew the design on a graphics package. This allowed me to incorporate my name into the actual circuit board - the electric ...
    11-12-2007

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