Squarewave Oscillator | Electronic Project Circuits

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Function Generator with ICL8038

Specifications
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
Sine wave THD

* Less than or equal to 0.8% from 10 Hz to 10 KHz
* Less than or equal to 2.5% from 1 Hz to 100 KHz

Triangle wave non-linearity

* Less than or equal to 0.5% upto 10 KHz.
* Less than or equal to 1.5% at 100 KHz.

Square wave rise-fall time Less than or equal to 200 ns.

Components
SEMICONDUCTORS. IC1-ICL8038, IC2-LM318, T1-SL100, T2-SK100, D1, D2-IN4148
RESISTORS
1/4 W – 5% R1, R13, R14-10E; R18-22E; R16-47E; R11-56E; R9-220E; R19-390E; R2-1KE; R6, R8-2.2KE; R17-1.8KE; R3-R5-4.7KE; R10, R29, R15-3.9KE; R20, R21-39KE; R22-15KE.
PRESETS VR1, VR3-2.2KE; VR4-470E; VR5-VR7-l00KE; VR8-22KE; VR10-IOKE.
POTENTIOMETERS. VR2-FF-500E 1 W, VR9-VF-22K 1 W.
CAPACITORS
30V C1, C7, C8,-0.1 MFD; C2-3.3 MFD; C3-0.33 MFD; C4-33 KPF; C5-3.3 KPF; C6-330PF; C9-100MFD; C10-22PF; C11, C12-IOKPF; C13-20KPF.
MISCELLANEOUS FC-1 POLE 5 WAY SWITCH, SS-2 POLE 3 W
Read More Source:http://schematics.blogspot.com/2006/07/function-generator-using-icl8038.html

Be the first to comment - What do you think? Posted by admin - December 13, 2007 at 10:09 pm

Categories: Oscillator generator Tags: function generator, ICL8038, sawtooth wave, sine wave generator, squarewave oscillator

12V to 220V Inverter 180W by 2N3055

This is AC Inverter circuit ,It Converts 12VDC to 220VAC Output 180W. Use easy Circuit Square Wave Oscillator Generator 50Hz.
So Boost up Current High by 2N3055 Drive Transformer output 220V 50HZ From Voltage Supply 12V 10A.

Read Detail more in circuit.
12V converter circuit

Be the first to comment - What do you think? Posted by admin - October 4, 2007 at 10:27 pm

Categories: Inverter Tags: 2N3055 power inverter, squarewave oscillator, Transistor inverter circuit

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.
Read detail :
Built around a single 8038 waveform generator IC, this circuit produces sine, square or triangle waves from 20Hz to 200kHz in four switched ranges. There are both high and low level outputs which may be adjusted with the level control. This project makes a useful addition to any hobbyists workbench as well.

Allof the waveform generation is produced by IC1. This versatile IC even has a sweep input, but is not used in this circuit. The IC contains an internal squarewave oscillator, the frequency of which is controlled by timing capacitors C1 – C4 and the 10k potentiometer. The tolerance of the capacitors should be 10% or better for stability. The squarewave is differentiated to produce a triangular wave, which in turn is shaped to produce a sine wave. All this is done internally, with a minimum of external components. The purity of the sine wave is adjusted by the two 100k preset resistors.

The wave shape switch is a single pole 3 way rotary switch, the wiper arm selects the wave shape and is connected to a 10k potentiometer which controls the amplitude of all waveforms. IC2 is an LF351 op-amp wired as a standard direct coupled non-inverting buffer, providing isolation between the waveform generator, and also increasing output current. The 2.2k and 47 ohm resistors form the output attenuator. At the high output, the maximum amplitude is about 8V pk-pk with the square wave. The maximum for the triangle and sine waves is around 6V and 4V respectively. The low amplitude controls is useful for testing amplifiers, as amplitudes of 20mV and 50mV are easily achievable.