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Triangle Wave Generator Circuits
Last Updated on: Wednesday, July 16, 2014 06:35 AM

Circuits Designed by Dave Johnson, P.E. :
  • Triangle Signal Generator
    A Discover Circuits visitor needed a variable low frequency triangle signal generator, which would produce a full 5 volts peak to peak signal using a 5v supply.  I suggested the circuit below.  It uses three rail to rail op amps (2 LMC6484 dual op amp packages).  The first circuit produces a clean 2.5v reference voltage.  The second is configured as a classic multivibrator oscillator, whose frequency can be changed using a variable resistor. 

    The waveform generated across the oscillator timing capacitor is fairly linear and is restricted to only 1 volt peak to peak.  It swings a half volt above and below the 2.5v reference.  The voltage across the capacitor is then amplified by the third op amp by a factor of 5.  The result is a pretty clean triangle signal, which approaches to within a few tens of millivolts of the supply rails.


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Frequency Doubler Operates on Triangle Waves -  03/14/96 EDN-Design Ideas.... EDN is migrating links. This link is not verified.  Search the "title" + "EDN" for new link.
High-fidelity triangle wave generator consumes only 6 A -  16-Oct-03 Issue of EDN  Ideal triangle waves involve infinite d2V/dt2, so high-fidelity triangle waves entail very high bandwidths. Micropower circuits have fairly low bandwidth, so generating good triangle waves with such circuitry becomes problematic. The circuits of Figure 1 show two methods of generating triangle waves.... [Design Idea by Glen Brisebois, Linear Technology Corp, Milpitas, CA]
Precise Triangle Wave Generation -  National Semiconductor Application Notes,28-Jun-1996 / (app note added 3/03)
Precision 40kHz Triangle Generator -  This circuit generates a precision 40KHz triangle waveform.  (added 7/06) . [Designed by David A. Johnson]
Scheme yields Frequency Locked Triangle Waves -  02/02/98 EDN-Design Ideas....The circuit in Figures 1 and 2 generates frequency-locked triangle waves of constant amplitude. It uses readily available TTL and other older-technology parts.  The circuit portion in Figure 1 comprises the frequency dividers, counters, and converter. The portion in Figure 2 contains current sources, output circuits,.... [Design Idea by Daniel Dufresne, Decatron, St Bruno, PQ, Canada]

Summer Linearizes Ramp & Triangle Generators -  12/08/94 EDN-Design Ideas....The ramp generator in Fig 1a and the triangle-wave generator in Fig 1b charge capacitor C1 linearly. The key to the circuits' linearity is an op-amp adder that sums a reference voltage with the voltage on C1. For Fig 1a's ramp generator, the adder comprises op-amp IC1, R4, R5, and associated components.... EDN is migrating links. This link is not verified.  Search the "title" + "EDN" for new link.
Transconductance amp gives oscillator reciprocal response -  17-Apr-03 Issue of EDN  The circuit in Figure 1 is a variation on the familiar integrator/comparator triangle-wave oscillator, which you typically implement with two op amps. An integrator and a comparator connect in a positive-feedback loop; the comparator drives the integrator and vice versa. A fixed amount of hysteresis exists in the comparator, producing a triangle wave at the integrator's output.... [Design Idea by Mike Irwin, Shawville, PQ, Canada]
Triangle Signal Generator - A Discover Circuits visitor needed a variable low frequency triangle signal generator, which would produce a full 5 volts peak to peak signal using a 5v supply.  I suggested the circuit below.  It uses three rail to rail op amps (2 LMC6484 dual op amp packages).  The first circuit produces a clean 2.5v reference voltage.  The second is configured as a classic multivibrator oscillator, whose frequency can be changed using a variable resistor.  The waveform generated across the oscillator timing capacitor is fairly linear and is restricted to only 1 volt peak to peak.  It swings a half volt above and below the 2.5v reference.  The voltage across the capacitor is then amplified by the third op amp by a factor of 5.  The result is a pretty clean triangle signal, which approaches to within a few tens of millivolts of the supply rails. [Circuit of the Week designed by David A. Johnson, P.E.]
Triangle & Square Wave Generator -  Here is a simple triangle/squarewave generator using a common 1458 dual op-amp that can be used from very low frequencies to about 10 Khz. The time interval for one half cycle is about R*C and the outputs will supply about 10 milliamps of current. Triangle amplitude can....
Triangle-Waveform Generator (Randy LinscottO -  The Tri-Waveform Generator can be used for a number of different uses. The one that I use it for is a signal generator to test circuits. The frequency range is 20 to 20khz. and can be adjusted by R1. The duty cycle or the time that the waveform is high .(electronic circuit added 4/05)

Triangle Wave Generator Circuits
Last Updated on: Wednesday, July 16, 2014 06:35 AM

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