Welcome to AFIATA.COM Information of basic electronic circuits for repair and project
[ Content | Sidebar ]

Archives for May, 2011

Voltage Reg

Voltage Reg Power Supplies Power Supply Circuit using 2N3055

15W Audio Amplifier Circuit

15W Audio Amplifier Circuit using TDA1553Q

Full-duplex Intercom PCB for your office and house

P1____    22K  Log. Potentiometer R1___     22K  1/4W Resistor R2,R3____ 100K  1/4W Resistors R4___     47K  1/4W Resistor R5_____   2K2 1/4W Resistor (See Notes) R6_____   6K8 1/4W Resistor R7________22K  1/2W Carbon or Cermet Trimmer R8_______ 2K7 1/4W Resistor C1,C6_____100nF  63V Polyester or Ceramic Capacitors C2,C3___ _10µF  63V Electrolytic Capacitors C4________22µF  25V Electrolytic Capacitor C5________22nF  63V Polyester or […]

Making VCO for MF-HF-VHF

It is a simple Colpits oscillator, but it has a 78L05 5v regulator (not shown) as the supply feed. The 22K and 33K resistors bias TR1 emitter to about 3v DC, which means that TR1 emitter can feed the CD4040 counter input directly when the synth is fed from a 10 volt supply. This is […]

sensor circuit

Alarm music for sensor circuit using UM3483 R1,3,4 ……….. 100K R2 …………… 56K R5 …………… 330K VR …………… trimport 100K C1 …………… 33pF C2 …………… 22uF/10V C3 …………… 100nF C4 …………… 4,7uF/10V C5,6 …………. 20nF C7 …………… 100uF/10V Q1 …………… 9012 Q2 …………… 9013 IC1 ………….. UM3483, MB683 S1 …………… Push on Sw SP …………… […]

Privacy Policy - Sitemap

Disclaimer

+1 demo: Basic page