Circuit Door Buzzer by NE555 + LM386
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2007
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May
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- DC Motor Control Circuit
- Frost Alarm or Cold Activated Switch by IC 741
- POWER SUPPLY ATX PC 200W
- Voltage Controlled Switch using 555 Timer
- 24 Hour Timer by IC 4060
- 555 Asymmetric Timer
- Other gates made with NAND
- 4011 : 2-input NAND gates (easy IC )
- Dark Activated Switch by IC 741
- CD4001 Light Detector Circuit
- 555 Timer 5 to 30 Minute
- 1MHZ Digital Frequency Meter
- 12V Car Battery Charger
- Mini Stereo MIXER MIC-LINE for PC Audio Card
- LM317 - Adjustable Regulator 1.5V
- LM741 - Op-AMP (Operational Amplifier)
- LM8560 Digital Clock 24 Hr with alarm
- Super Flashing Light by C1061
- 2 BC548 Transistor FM Voice Transmitter
- Circuit Video Amplifier by transistor BC547 & BC557
- Circuit Sound SCR Swith by IC 1458 & SCR C106D
- Circuit Light Relay Switch By BC547 & BC337
- Egg Timer By 555
- Door Buzzer by NE555 + LM386
- 555 Table Lamp Circuit
- LED Chaser by IC 4017 + IC 555
- Timer Circuit by FET + Transister
- ZN1034E Timer circuit
- Simple Timer by CA3140 + NE555
- CMOS Monostable by 4011
- Dooebuzzer with 555
- Christmas Tree Lights Flasher with 7812+LM380
- Water Alarm with LM350
- Touch Switch By IC 4001 & 4020
- Supply Splitter with IC 741& TIP41,TIP42
- Light Sensitive Switch with LDR + 2N2926
- FET Overload Current Trip
- Dfferential Temperature Relay Switch by IC 741
- D.M.M. To Stopclock Converter with CA3140
- 555 IC Timer control relay Switch
- 5-13V Power Supply with IC 7805 & CA3140
- Opto-Thermo Control Relay Switch with IC 741
- Two Tone Alarm with IC LM3900
- Opto-Thermo Alarm with IC 741 & 4001
- Light Change Detector by IC CA3130
- IC 555 LED Flasher
- LM3909 Low-Power LED Flasher
- Low Battery Voltage Indicator by IC 8211
- Infrared Intruder Alarm
- Car Battery Alarm
- circuit regulator 12V 10A by IC 723+2N3055
- 7805+Mj2955 power supply 5V 5A for digital circuit
- Two-Down-One
- 12V DC Motor Speed Controller by 4011
- Nicad Charger
- Car Cassette Power Supply
- Unregulator Power Supply
- Regulator Booster by transistor
- Single IC Power Supply by 78
- Regulated Power Supply by Transistor (TIP31)
- Auto Charger battery 12V (with PCB)
- Regulator 0-30V 5A by IC 723 & 2N3055 -2part
- Regulator 5V 3A by IC LA5105
- Regulator 0-30V 2A by IC 723 & 2N3055
- Waa-Waa
- Voice Operated Fader
- Tremolo Unit
- Sustain Unit
- Speech Processor
- Single IC Organ
- Opto-Tone (Control sound by light)
- Noise Gate by BC109
- Metronome by transistor
- Metronome by 555
- Automatic Fader by LF351 & FET
- Auto Waa
- Audio Limiter (Audio Control)
- Mosfet 6 Watt Siren
- Stereo Synthesiser by Transistor
- Transistor Hum Notch Filter
- Remote and Touch Volume Controls by MC3340P
- Peak Reading VU Meter by CA3130
- Peak Level Indicator by ua723
- LM3914 LED VU Meter
- Simple Regulator By Transistor (C1061)
- Regulator 5V,6V,9V,12V 1A By IC 7805,7806,7809,7812
- Regulator 1.25-30V 1A By LM317T
- Regulator 0-30V 1A By Transistor (C1061)
- XR2206 Function Generator.
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May
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