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74ACT74 Makes Low Skew Clock Divider - 12/17/98 EDN-Design Ideas: 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.....(design idea added 6/06) |
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Amplifiers Perform Precision Divide by 2 Circuit - 02/06/03 EDN-Design Ideas: 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,.....(design idea added
1/05) |
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Analog divider uses few components - 07/25/02 EDN-Design Ideas: The circuit in Figure
1performs active voltage-to-current conversion or acts as a variable-gain current mirror
with high precision and bandwidth. A typical application is testing high-speed ICs or
other devices that have inputs designed to be driven from current-steering DACs to enable
a modulated voltage source to control the devices.....(design idea added 12/04) |
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Charge Pump Circuit Divides by Two - 02/18/99 EDN-Design Ideas: Small size and
efficiency approaching 100% make switched-capacitor charge pumps popular for voltage
doubling and inverting in miniature dc-dc applications. Few are aware, however, that most
charge pumps can halve as well as double or invert an input voltage. The increasing
adoption of low-voltage logic makes this ÷2 capability useful for generating low-voltage
supplies in portable equipment. You can use it, for example, to convert a 3.6V RF-supply
voltage to 1.8V for powering low-voltage logic (Figure 1). Simply reversing input
and output of a voltage doubler makes it a voltage divider. Implementing this scheme with
MAX660 or MAX1683 voltage-doubler charge.....(design idea added 6/06) |
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Cheap 40kHz Clock - ASCII format. This circuit has worked for me in many applications.
(it might be an idea to buffer the signal befor using it. (There are still 5 unused gates
in the 'C14) (electronic circuit added06/06/06) |
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Circuit Conditions Variable Duty Cycle Clock - 02/17/97 EDN-Design Ideas: The circuit
accepts an input clock of any duty cycle and generates any desired duty cycle at the
output. You need to add only one flip-flop to the earlier design to generate an
arbitrary-duty-cycle output. You can use the circuit to correct a non-50% input to a 50%
output or to create a non-50% output from any arbitrary input duty cycle. The
input-clock.....(design idea added 6/06) |
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Circuit divides frequency by N+1 - 07/11/02 EDN-Design Ideas: Digital
frequency dividers usually use flip-flop stages that connect the Q pin to the D data-input
pin of the following stage. This configuration creates a binary waveform that you can feed
back to the input. You can divide any integer lower than 2N with minimal stages, where N
is the number of stages.....(design idea added 1/05) |
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Circuit forms Divide by 1.5 Counter - Two inexpensive ICs divide a TTL clock signal by
1.5. By following the circuit with another flip/flop, you could also generate a divide by
three function. ….(designed by David A. Johnson) |
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Clock divider - (circuit / schematic design added 6/06) |
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Counter Provides Divide by 45 Function - 05/22/97 EDN-Design Ideas: (design idea added
3/03) |
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Divider with K193 IE2 - (electronic circuit added 6/07) |
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Divider with K193 IE7 - (electronic circuit added 6/07) |
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Divider with MB506 - (electronic circuit added 6/07) |
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Divider with NEC506 - (electronic circuit added 6/07) |
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Divider with SAB6456/ SDA2101 - (electronic circuit added 6/07) |
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Divider with SP8695 - (electronic circuit added 6/07) |
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Frequency Doubler Operates on Triangle Waves - 03/14/96 EDN-Design Ideas: (design idea
added 03/03/03) |
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Precision Divide by Two Analog Attenuator Needs No External Components - 03/17/05 EDN-Design
Ideas: (design idea added 11/05) Many modern A/D converters offer only a 5V input
range, and using these converters with a 65V or larger input signal gives the designer a
problem: how to discard half of a good analog signal without introducing errors and
distortion. To solve.... |
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Synthesize Optimal Digital Frequency Dividers - 05/13/99 EDN-Design Ideas:.....(design
idea added 11/05) |
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Unusual Frequency Dividers - (electronic circuit added 7/03) |
