LM358 | Electronic Project Circuits

Posts Tagged ‘LM358’

Led light movement the audio signal with LM358- IC 4017

This is a circuit that features a running pace with a changing voice, the tiny microphone. For a frivolous fun.
Operation of the circuit when a signal is to change the MIC1 audio signal and power amplifiers to be stronger. The LM358 IC1 / 1 and IC1 / 2 classified as a circuit that changes the electrical signal of the audio signal to be square, to control the operation of pin 14 of IC2. IC2, which is connected to the circuit. The output pin voltage is out sort of leg 3, 2, 4, 7, 10, 1, 5,6, 9 and 11. On IC2 controls the signal LED lights chasing each step on the moon. The number of square wave signal to the pin 14. The R8 help restrict the current flowing through the LED accordingly.

1 comment - What do you think? Posted by admin - November 27, 2010 at 6:31 am

Categories: LED Flasher, Meter Tags: Led audio control light, led light effect, LM358

Dew sensor by LM358

Dew (condensed moisture) ad- versely affects the normal per- formance of sensitive electronic devices. A low-cost circuit described here can be used to switch off any gadget automatically in case of excessive humidity. At the heart of the circuit is an inexpensive (resistor type) dew sensor element.

Read more original source:http://www.electronicsforu.com/efylinux/circuit/cir121.htm

Be the first to comment - What do you think? Posted by admin - August 7, 2008 at 9:18 am

Categories: Detector Tags: Dew sensor, LM358, Moisture sensor circuit

100W Square wave Inverter by CD4047, LM358,2SC1061,2N3055

This is AC Inverter. Input 12VDC from car battery to output 220V AC 50Hz or 60Hz at Square wave signal.
The main part is IC CD4047 (or IC 4047 Series) and IC LM358 and Transistor 2SC1061 and 2N3055.
The transformer is 12V-012V Primary : 220V Secondary.
and current 3A up for power output than 100W.
Note:
C1 = 0.1uf metalized-film capacitor, 5% tolerance.
R1 = 47K for 50Hz output, 39K for 60Hz output.