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1 Second Time Base From Crystal Oscillator (circuitdb): The schematic above
illustrates dividing a crystal oscillator signal by the crystal frequency to obtain an
accurate (0.01%) 1 second time base. Two cascaded 12 stage counters (CD4040) form a 24
stage.... (added 05/07) |
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1 Second Time Base from Crystal Oscillator: (electronic circuit added 05/07) |
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10 Hints for using Your Power Supply to Decrease Test Time (5968-6359E):
Learn ten simple ways to improve your testing capabilities with your power supplies
and electronic loads. Aligent Application Note (app note added 4/08) |
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100 MHz Clock Solution for Desktop Computers: Pericom Semiconductor
Application Brief # 021 (app note added 02/05) |
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2 Transistor Atomic Frequency Standard: (schematic added 8/03) |
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2.8 GHz prescaler keeps cost down: 07)/20/00 EDN-Design Ideas / (added11/05)
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28 LED Clock Timer 72 LED Clock: programmable clock Timer circuit that uses
individual LEDs to indicate hours and minutes (added 4/02) |
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2D3 Nixie clock Schematic: (electronic circuit added 05/07) |
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30 Nanosecond Settling Time Measurement for a Precision Wideband Amplifier:
AN79 Linear Technology AN79 modifies methods presented in AN74, permitting
verification of 30 nanosecond amplifier settling times to 0.1% resolution.
sampling-based technique used is detailed and results presented. Appendices cover
oscilloscope overdrive issues, construction of a subnanosecond rise time pulse
generator, amplifier compensation, circuit construction and calibration procedures. |
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4 Bit Binary Clock: (schematic added 8/03) |
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4 Channel Timer using Atmel 89C4051 and MAX7219 display Driver: (circuit /
schematic added 6/05) |
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4 Hints for Making Better Microwave Counter Measurements: Agilent
Application Note (added 6/06) |
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40 LED Bicycle Light (555 Timer 6 Volt): (schematic added 8/03) |
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5 to 30 Minute Timer (MIT): (electronic circuit added 05/07) |
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5 to 30 Minute Timer: (schematic added 8/03) |
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50 MHz Frequency Counter Voltage Meter and SwR/PWR Indicator: (electronic
Circuit diagram added 03/03) |
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555 DC-AC Inverter: (circuit / schematic design added 6/06) |
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555 Go/No Go Tester: (schematic added 8/03) |
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555 Makes Handy Voltage to time Converter: 02/01/01 EDN-Design Ideas /
(added 06/03) The circuit in Figure 1 is a simple, low-cost voltage-to-time converter
using ubiquitous 555 timer chip. You can use IC's monostable multivibrator
as a voltage-to-time converter by connecting analog-voltage input to
charging resistor, R, instead of connecting R to VCC. With this modification,.... |
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555 One Shot: Basic 555 MonoStable Multivibrator (added 8/03) |
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555 Oscillator: (app note added 8/03) |
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555 Timer #2: (app note added 8/03) |
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555 Timer 40kHz Infrared Oscillator: (electronic circuit added 9/03) |
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555 Timer as an A/D Converter: Measure voltages accurately with a
microcontroller using this simple circuit. Includes sample program for Parallax
Basic Stamp (added 6/06) |
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555 Timer IC Tester: (schematic added 8/03) |
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555 timer Mono stable (one shot) circuit: The two circuits below illustrate
using the 555 timer to close a relay for a predetermined amount of time by pressing a
momentary N/O push button. The circuit on the left can be used for long time....
(added 05/07) |
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555 Timer MonoStable Circuit using Pushbutton: (circuit added 7/02) |
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555 Tone Generator 8 Ohm Speaker: (electronic diagram added 6/03) |
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555-based solar engine: Time-Controlled Solar Engine: a solar engine design
using a 555 timer IC (added 6/06) |
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6 Digit 40MHz Frequency Counter Module: Here is design for a very low
cost 6-digit frequency counter module using of shelf components (and not that
expensive 74C926!). The standard circuit will display directly in Hz (1MHz max), and
re is a separate on board divider that will allow you to display directly in KHz
(approx 40MHz max). Because display reads directly in.... (add 11/05) |
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7 Segment LED Counter: (circuit added 7/02) |
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72 LED Clock: (circuit added 7/02) |
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74ACT74 makes Low-skew clock divider: 12/17/98 EDN-Design Ideas /
(added 11/05) Serial-data systems often generate an internal clock at twice
data rate for mid-bit sampling or for generating bi-phase codes. External equipment
and some internal processes require a clock that runs at data rate. Simply
dividing twice-rate clock with a flip-flop generates a data-rate clock that is
.... |
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8 Hints for Making Better RF Counter Measurements: Agilent Application Note
(added 6/06) |
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80186 timer pins provide general I/O : 08/03/98 EDN-Design Ideas /
(added 11/05) Intel's (www.intel.com) 80186 is a highly integrated mP common in
embedded applications. It combines 15 to 20 common iAPX86 system components, such as a
DMA controller, an interrupt controller, timers, a clock generator, a bus interface,
and chip-select logic on one chip. Unfortunately, unlike many mCs, it provides.... |
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9 Second Digital Readout Timer: (circuit added 7/02) |
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9 Second LED Relay Timer: (circuit added 7/02) |
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A 2.x GHz WiMAX Direct Conversion Transmitter: AN-826 Analog Devices
Application Notes (app note added 2/06) |
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A Design and Manufacturing Guide for the Lead Frame Chip Scale Package:
AN-772 Analog Devices Application Notes (app note added 2/06) |
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A GPS receiver based frequency standard: (diagram added 05/07) |
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Acquisition Times of the ADN2812: AN-757 Analog Devices Application Notes
(app note added 6/06) |
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Ad-03: Effects of Aperture Time and Jitter in a Sampled Data: National
Semiconductor Application Note (app note added 6/06) |
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AD9852 DDS schematic: (circuit / schematic added 6/05) |
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ADN2812 Evaluation Board: AN-657 Analog Devices Application Notes (app
note added 2/06) |
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ADN2819 Evaluation Board: AN-636 Analog Devices Application Notes (app
note added 2/06) This application note describes use of ADN2819
evaluation board. The ADN2819 is a multirate clock recovery, data-retiming device
based on a multiloop PLL architecture. The ADN2819 can recover clock and data at SONET
OC-3,OC-12,OC-48,and Gigabit Ernet data rates as well as 15/14 Forward Error
Correction (FEC) .... |
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Amplifier Timer: Turns-off your amplifier when idle for 15 minutes Fed by
amplifier tape-output (circuit / schematic design added 10/06) |
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Amplifiers perform precision divide by 2 circuit: 02/06/03 EDN Design Ideas
/ (added 1/05) The classic implementation of a voltage-halving circuit
uses two equal-value resistors. Using 1% resistors provides a divider output with 2%
accuracy. For most applications, this performance is cost-effective and more than
adequate. However, when you need extreme precision, this approach requires
correspondingly accurate resistors and can become expensive.... |
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An Overview of Pericom's VCXO and Crystal Technology: Pericom Semiconductor
Application Note # 048 (app note added 02/05) |
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AN-1173: High Speed BUS LVDS Clock DistributionUsing the DS92CK16 Clock Distribution
Device: National Semiconductor Application Note (app note added
2/06) |
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AN-1312: Scan Bridge (STA111/STA112) Timing: National Semiconductor
Application Note (app note added 2/06) |
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AN-1439: Use of the LMV112 to Reduce Reference Clock Interaction in Handheld Device:
National Semiconductor Application Note (app note added 2/06) |
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AN-214: Ground Rules for High Speed Circuits: AN-214 Analog Devices
Application Notes (app note added 2/06) Layout and Wiring Are Critical in
Video Converter Circuits. |
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AN-30: Ask the Applications Engineer-PLL Synthesizers: AN-30 Analog Devices
Application Notes (app note added 2/06) |
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AN-347: Shielding and Guarding: AN-347 Analog Devices Application Notes
(app note added 2/06) How to Exclude Interference-Type Noise. What to do and Why
to do it-A Rational Approach |
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AN-349: Keys to Longer Life for CMOS: AN-349 Analog Devices Application
Notes (app note added 2/06) Here's How CMOS Can be Protected Against Abuse |
