elecfree.com

Please wait for loading...




      (20):

    /
     8  +7 2014 feb 232n3055 single transistor oscillator2N3055 Power Inverter | inverter | Elecfree.com | Elecfree.comThis is Simple High Power inverter by 2N3055 circuit. It use power
     10  +7 2014 feb 122n3055 single transister ocilator
     12  -1 2014 feb 1210 flashing leds using cd4017LED flasher circuits | LED circuit | Elecfree.com | Elecfree.com10 LED Flashing using CD4017 This entry was posted on Thursday, February 19th, 2009 at 9:14 am and is filed under Digital, LED Flasher.
     13  -4 2014 jan 02sound receiver circuitCircuit receiver | rf | Elecfree.com | Elecfree.comThis be total up the circuit about receiver . It assemble the RF receiver circuit , FM circuit ,AM radio ,VHF, take radio signal, sound signal, and  ...
     20  -5 2014 feb 05stk amp circuit diagramstk amplifier circuit | amplifier | Elecfree.com | Elecfree.comHybrid stereo PA OTL STK439 Series The power amplifier circuit this ,be ... free electronic circuits,electronic circuit diagrams ,simple and hobby  ...
     34  +9 2014 feb 28photocell control diagramPhoto cell control | Control | Elecfree.com | Elecfree.comSolar garden lamp by CDS photocell control Reverse engineered circuit diagram of yet another commercially produced solar garden lamp.
     44  ~ 2014 jan 09hobbyist generator circuitHigh voltage generator circuit | power supply | Elecfree.com Here is a simple circuit for generating over 100 volts from a 12 volt source for ... Read More Source :
     46  -4 2013 dec 14sound sensor alarm circuitalarm sounds circuit | alarm | Elecfree.com | Elecfree.comAlarm sound with control switch. ... Room Noise Detector by LM358 This circuit is intended to signal, through a flashing LED, the exceeding of a  ...
     59  -17 2014 feb 14electronic diagram simple home alarmElecfree.com | Elecfree.com | free electronic circuits, electronic circuit free electronic circuits, electronic circuit diagrams , simple and hobby electronic circuits, electronic circuit schematic . ... Touch sensitive to the melody alarm . June 16 ... 200 watts home power inverter project using SG3526N.
     59  +42 2014 jan 08us police sirene auto555 siren alarm circuit | alarm | Elecfree.com | Elecfree.comAmerican Police Car Siren by IC 555 The second circuit simulates the siren of an American police car . It uses two 555 timers in the circuit.
     63  -20 2013 dec 11led vu meter buildbuild led vu meter | meter | Elecfree.com | Elecfree.comLed light based music stereo with multi system This circuit is another name for the VU meter . which often have a lot of equipment. Cause  ...
     65  +36 2014 mar 02super switch wireless remoteSuper Switch Wireless Remote | Control | Elecfree.com | Elecfree.comWireless remote control wall outlet plugs into any standard household outlet and conveniently turns on - and off - lamps, small appliances,  ...
     66  -28 2013 dec 24generator alarm circuitIt uses two 555 timers in the circuit . The 555 on the right is wired as an alarm tone generator and the second 555 timer on the left is a 1 Hz  ...
     67  +17 2014 feb 07hobbyist generator coilsDouble Ignition Coil High Voltage Generator This next design is similar to the ... Read More Source :
     69  +32 2013 dec 12simple fm receiverFM receiver circuit | rf | Elecfree.com | Elecfree.comFm Receiver Jan 8, 2010 ... Circuit diagrams and schematics - Electronic projects . Posts Tagged 'fm receiver'. Simple FM Receiver Pocket FM  ...
     69  +32 2013 dec 03cell detector cktbug detector circuit diagram | detector | Elecfree.com | Elecfree.comBug Detector Circuit Mobile Bug Detector using CA3130. Monday, September 6th , 2010. This handy, pocket-size mobile transmission detector   ...
     77  -29 2013 dec 16logic probe circuitlogic probe circuit | digital | Elecfree.com | Elecfree.comLogic Probe Feb 16, 2011 ... This circuit is a Logic Probe . It indicates the logic state of the node of any TTL logic&A...
     86  -29 2014 feb 02moisture senso icMoisture sensor | detector | Elecfree.com | Elecfree.comMoisture Sensor Apr 2, 2011Â ... When ... Plant Moisture Meter by IC 741 Stick the metal probes into a freshly watered plant and adjust R5 for a  ...
     88  ~ 2013 dec 09digital clock schematicClock circuit | oscillator | Elecfree.com | Elecfree.comLM8560 Digital Clock 24 Hr with alarm 27 May 2007 ... If do you want clock timer cicuit. I like this Circuit LM8560 Digital Clock 24 Hr with alarm.
     90  +11 2013 dec 15led flashlight driver circuitLED driver circuit | LED circuit | Elecfree.com | Elecfree.comThis be the led driver circuit . which can apply to led display. There is many ... 1.2 V Drive 7 High efficiency white LED flashlight 7 Feb 2008 …
    1 of 1 pages