Circuits & Schematics: metal - 7

61. Circuit provides visual verification of IR pulses
    Mike Gambuzza
    Circuits Beginners
    .. provides a visual feedback to indicate that the transmitter is working. The circuit can be enclosed in a small plastic or metal box and requires just a 9V transistor battery for operation. Diode D 1 is a basic Everlight PD333-3C/H0/L2 or ...
    Sep 19, 2011

62. Front End Turns PC Sound Card into High-Speed Sampling Oscilloscope. Part 1 - Front End, Sampling Clock Generator
    Circuits Measurement
    .. used to implement a one shot that makes a 200 ns sample pulse when R12 is 2.7 kΩ and C2 is 68 pF. IC4 is a fixed-frequency metal-can crystal oscillator. Another approach would be to use CMOS inverters (74HC04) and a discrete crystal, X1, to ...
    Oct 11, 2012

63. Minimize Noise in Power-Supply Measurements
    John S Lo Giudice
    Circuits Measurement
    .. better at decoupling high-frequency noise. Electrolytic, paper, and plastic-film capacitors comprise two sheets of metal foil. A sheet of dielectric separates the metal-foil sheets, and these three components form a roll. Such a ...
    Mar 12, 2012
64. osPID - open source PID-controller. Part 1 - Main Board
    Circuits Automation MCU Open-Source Platforms Microcontrollers Usage Arduino
    .. (ICSP) connector in case you wanted to modify the bootloader residing on the ATMega328P or simply wanted to run it bare metal without Arduino. The main board is connected to the input output cards through robust edge card connectors. We ...
    Mar 4, 2014
65. Use a transistor as a heater
    Circuits Automation
    .. of the item that Q 2 heats, and the temperature remains at the level that VR 1 sets. IC 1 and Q 2 thermally mount on the metal block that forms the sample holder; use thermal grease on both components for maximum heat transfer. Note that ...
    Jan 15, 2013
66. Generating a ±10.24 V True Bipolar Input for an 18-Bit, 1 Msps SAR ADC
    Circuits Analogue Design Application Notes Digital Linear Technology LTC2338 LTC2338-18 LT1469
    .. Layout strategies for this circuit are also shown. The circuit uses only the LT1469 dual precision op amp and two metal film resistors to form a single-ended to differential driver for the LTC2338-18. This circuit takes a ...
    Jan 31, 2014
67. PLL Provides Ratiometric Capacitive Touch Switch For Appliances
    M.S. Nagaraj
    Circuits Power
    .. printed-circuit board (PCB) can be made to function as touch sensing plates. The circuit in the figure uses two identical metal plates or copper pads on one side of a double-sided PCB as the sensing pads (SP On and SP Off ). Sensing ...
    Jul 28, 2014
68. NE555 timer sparks low-cost voltage-to-frequency converter
    Gyula Diószegi János Nagy
    Circuits Analogue Design Measurement Philips NE555 TL071
    .. factor. You can diminish temperature dependence if R 1 has a low temperature coefficient and P 1 is a multiturn, ceramic-metal potentiometer.
    Sep 24, 2015
69. Protect an LED driver against output shorts to ground
    Circuits Supply Light Power Texas Instruments INA201 TPS40211
    .. circuit is a device targeting automotive headlamp applications and is actually a monolithic, five-die LED on an insulated metal substrate (Fig. 5). The device has a surge current rating of 2 A for less than 10 us and a typical forward ...
    Nov 23, 2015
70. A Low-cost 0.5 A 33 V LED driver module with 90+% efficiency
    Circuits Light Power Taiwan Semiconductor TS19376CY5
    .. PCB provides heat sinking for the TS19376 with extra copper on the back side of the PCB and thermally connected to top side metal with thermal vias. A Low ESR input capacitor (C1) is required to suppress current spikes during driver ...
    Feb 26, 2016

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