Prescaler with Counter by IC digital 4511,74190 Digital frequency counter is being used for wide range of applications. Digital frequency counter extensively uses digital circuits and hence fairly good knowledge of digital circuits and of digital integrated circuits is required to understand the operation of the frequency counter. ….
1MHZ Digital Frequency Meter by IC 4026, 4007 , NE556 This circuit is a frequency meter, low cost. It covers region 1HZ until 1MHZ. The IC1 schmitt trigger that it regulates the signal of entry and him changes in reasonable level suitable for the IC2-3-4. With the tenth pulse in the entry of IC2/1, is produced a pulse ” carry ” in the IC3/5. The same moment the IC2 causes the depiction in the DIS1, show [0], the IC3 causes the DIS2, to show [ 1 ]…..

PIC Frequency Meter and Volt meter by PIC16F876 Measurement of the frequency up to 50MHz Measurement of power supply voltage in the range of 0.0 V … 25.5 V Measurement of the input voltage at two analog inputs, simultaneously displayed as bargraph (PWR/SWR or S) indicator. The input sensitivity could be chosen between 0.25V, 0.5V, 1.0V and 2.0V for maximum bargraph indication. This is a successor of the PIC16C71 4-digit LED f-counter & V-meter. Some hard to find parts used in the previous version,….

XR2206 Function Generator The XR2206 Function Generator>(Sine-Triangle-Square Waveform Generator) The frequency range is 1HZ to 1MHz. and can be adjusted by VR3……

Function Generator by 8038 , LF351 Mr. chai is want circuit Function Generator with IC 8038 for see guideline repair circuit. I find in web http://www.mitedu.freeserve.co.uk/Circuits see to this circuit very work sure. Built around a single 8038 waveform generator IC, this circuit produces sine, square or triangle waves from 20Hz to 200kHz in four switched ranges……
function generator

Simple Function generator by LM566 The simple Function generator two waveform, It produces triangle and square waves from 1Hz up to 1MHz. The Amplitude, offset and duty cycle are adjustable to offer wide range of generated signals. ….

Function Generator with ICL8038 Frequency range 0.95 Hz to 105 KHz in five decade ranges. Waveforms Sine, Triangular and Square. Output amplitude Adjustable from 10 mV PP. to 10 V PP, Output impedance 50 ohms.
Sine wave Amplitude Flatness +/- 1 dB

Triangle and Squarewave Generator by IC 40106 This is circuit Function Generater,Triangle and Squarewave Generator. Use IC 40106 and Transistor BC547,VR1 For Control frequency Output.
S3 to Seclector High = 1kHz-10kHz, Low = 10Hz-100Hz……….

Single supply Function Generator by TLC271 The circuit has both square-wave and triangle-wave output. The left section is similar in function to a comparator circuit that uses positive feedback for hysteresis. The inverting input is biased at one-half the Vcc voltage by resistor R4 and R5. The output is fed back to the non-inverting input of the first stage to control the frequency…………