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50 MHz Frequency Counter Voltage Meter & SwR/PWR Indicator - This is a
successor of the PIC16C71 4-digit LED f-counter & V-meter. Some hard to find parts
used in the previous version, which are out of production for some time, has been
omitted. A rather early PIC16C71 has also been replaced by 28-pin device
PIC16F876....(electronic Circuit diagram added 03/03/03) |
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500MHz PIC Prescaler - The prescaler kit is a simple divide by 10 ECL
circuit which can be used to extend the range of most PIC based frequency counters
from 50 MHz up to 500 MHz. The kit uses surface mount components except for the 78L05
regulator. ….(electronic schematic added 11/08) |
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[_OLD-ads-dont_upload/OLD I-ADS from web/ad-djandassoc.htm] |
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500W Power-Factor-Corrected PFC Converter Design with FAN4810/ AN-6004 -
Fairchild Application Notes / (app note added 6/06) |
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60 minute PIC Count Down Timer - On this page, I will introduce the
Count-down timer with PIC16F84A. I am putting a count-down timer by the hardware on
Electronic Circuits Application Garage. The function of the timer is the same as it
approximately. (The stop switch is added) Because this unit was made compactly, the
wiring of the back becomes quite complicated ….... |
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68000SBC - Build a 32-bit computing power single board with 68HC000, 256kB
SRAM, 256kB Flash, RTC, UART, and GPIO. ….(Circuit design added 06/09)
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68HC11 Based RDS Decoder - (electronic circuit added 7/03) |
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68HC11 Function Generator - .... |
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68HC11 Instruction Halts External RC Clock - 04/27/95 EDN-Design Ideas Using
the circuit in Fig 1, a 68HC11 µP's stop instruction can put the µP's external
RC-oscillator clock, as well as the µP itself, into a low-power mode. On receiving an
interrupt, the µP will exit the stop condition and enable the RC clock. The RC clock,
being a low-Q circuit, will start up immediately. Crystal oscillators, on the other
hand, can waste precious milliseconds coming up to speed and stabilizing....[Design
Idea by Allen Harstine, Micro Systems Engineering Inc, Lake Oswego, OR] |
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68HC11 Read Encoder - ….(design added 07/08/09) |
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68HC11 stepper Motor control - (circuit / schematic design added 6/06)
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68HC11 Synthesizes Accurate Sine Wave - 09/02/96 EDN-Design Ideas....You can
use a 68HC11 and a 12-bit serial DAC (Figure 1) to generate accurate sine waves
without using floating-point arithmetic. Figure 2 shows a block diagram for this
sine-wave generator. You can easily analyze the generator's behavior by writing state
equations in the z domain. You can also write equations in the s domain. The location
of the two poles....[Design Idea by Mika Maaspuro, Espoo, Finland] |
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