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Simple Component and Continuity Tester - This simple project
can be used to test components, circuit board tracks, wires and connections. . . . [Designed by John Hewes]
Simple counter for frequency measurements in VHF/UHF band - This simple counter is useful for frequency measurements of various wireless equipments,
especially transmitters, receivers and signal generators in VHF/UHF band (. . .
Simple Diode Temperature Sensor With Frequency
Output - The LTC6992 is a silicon oscillator with an
easy-to-use analog voltage-controlled pulse width modulation (PWM) capability. The LTC6992 is part of the
TimerBlox family of versatile silicon timing devices. A single resistor, RSET, programs the LTC6992’s internal
master oscillator frequency. The output frequency is determined. . . [Linear Technology App Note, Jun 16th 2010]
Simple Divide by N using '161s - Here is a simple circuit for obtaining divide-by-N from '161s. The technique will work for
one, two, or more dividers to obtain the desired N value. One counter handles N values up to 16, two counters
divide by N values up to 256, etc. . . [Charles Wenzel (unless otherwise noted)]
Simple Electronic 'Lock' - There are six (or more) push switches. To 'unlock' you must press all the correct ones at
the same time, but not press any of the cancel switches. Pressing just one cancel switch will prevent the circuit
unlocking. When the circuit unlocks it actually just turns on an LED for about one second, but it is intended to
be adapted to turn on a relay which could be used to switch on another circuit. Most relays cost about £2 to £3
extra. . . [Designed by John Hewes]
Simple Event counter - Schematic only, no circuit description. . . [Designer's name not given]
Simple
Parking Counter - The circuit is built around comparator
LM311 (IC1), timer 555 (IC2), 4-digit counter IC 74C926 (IC3), four LTS543 seven-segment displays (DIS1 through
DIS4), four npn transistors BC548 (T1 through T4), a foot switch S2 and a few discrete components. . . . [© EFY
Enterprises Pvt. Ltd. All rights reserved.]
Simple Timer Exploits Op-Amp Bias Current - 07/21/94 EDN Design Idea The simple, low-cost analog timer in Fig 1 exploits the parasitic
input-bias current of op-amp IC1. The timer achieves long time delays even though it uses only low-value,
inexpensive ceramic chip capacitors. After all, because t. . . [by Aleksandr Belousov, Baltimore, MD]
Simple Timer Remembers Your Rhythm - 01/05/95 EDN Design Idea The unpretentious controller in Fig 1 remembers the interval
between your pressing its start and stop buttons. Thereafter, the controller switches the load on and off every
day at the same times as you did. You reset the controll. . . [by MS Nagaraj, ISRO Satellite Centre, Bangalore,
Karnataka, India]
Simplest 555 Oscillator - The simplest 555 oscillator takes output pin 3 to capacitor C1 viaresistor R1. When the
circuit is turned on, C1 is uncharged and output pin 3 is HIGH. C1 charges via R1 and when Pin 6 detects 2/3 rail
voltage, output pin 3 goes LOW. R1 now discharges capacitor. . . [No designer name given]
Simplified Analysis of
Phase-Locked Loop Capture & Tracking Range AN 1200-7 -
Application Note. . . [Aligent]
Simplified Measurement of Output
Impedance - AS048 Application Note (app note 6/07) . . .
[Jenson Transformers]
Single Digit
Scoreboard - a compact general purpose display. . . [by
P. Townshend - EduTek Ltd]
Single Gate Synchronizes Clock - 10/27/94 EDN Design
Idea The deceptively simple circuit in Fig 1 harbors formidable power. Consider when you have a data-clock
input to your system for an existing serial data stream. Then, your system people surprise you. . . [by Phil
Harvey, Technology Integration Inc., Bedford, MA]
Single-Chip Clock Generator with 14-Channel Distribution Solves Timing Challenges in Networks - Analog Devices-Analog Dialogue. . . [by Behrhorst, Scott]
Single-digit Nixie clock - A
while ago I found a Burroughs B-5853 Nixie tube kicking around in the lab and decided that I should put it to
good use. Since I only had one of this size, I wanted to make a single-digit display out of it. . . . [© 2007 by
Riad S. Wah[by]
Siren 100dB - This is a very loud siren and if two or more piezo's are located in a room, the burglar does
not know where the sound is coming from. . . . [No designer name given]
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