Circuits & schematics

Electronics guide

1. UltraSonic Radar - 8264

2. 500W low cost 12V to 220V inverter - 5365

3. Servo Motor Control with PIC16F84 - 3319

4. One Transistor FM Radio - 3128

5. 200W audio amplifier - 2984

6. 100W Guitar Amplifier - 2795

7. 10 Band Audio Equalizer - 2784

8. Video/Audio Wireless Transmitter - 2673

9. 100W Audio Amplifier - 2514

10. Led display digital Voltmeter - 2498

11. Line Robot - 2384

12. 1.5W Audio power amplifier (12V) - 2198

13. VHF Audio Video Transmitter - 2194

14. 5 band graphic equalizer using a single IC/chip - 2159

15. 15W Fm-transmitter - 2056

16. Constant Current Battery Charger - 1915

17. 13.8V 20A power supply - 1909

18. Ultrasonic Parking Sonar - 1858

19. 3W FM Transmitter - 1852

20. LED Photo Sensor - 1718

21. 4 Watt FM Transmitter - 1717

22. Decibel Meter - 1694

23. Infrared beam barrier/ proximity sensor - 1636

24. 100W RMS Amplifier - 1628

25. Walker Robot - 1622

26. Bass-treble tone control circuit - 1613

27. Audio / video switch - 1600

28. MPF102 FM Receiver - 1570

29. Baxendall Tone Control - 1569

30. 5-motor walker circuit - 1516

31. Remote control using telephone - 1490

32. 50 Watt Amplifier - 1470

33. 90S2313 AVR Robot Board - 1452

34. Automatic Room Lights - 1427

35. Bass-treble tone control circuit - 1412

36. Telephone operated remote control using PIC16F84A microcontroller - 1371

37. Control electrical appliances using PC - 1368

38. Digital Volume Control - 1355

39. Power-Off Time Delay Relay - 1353

40. FM radio - 1349

41. Stereo Preamplifier with Bass-boost - 1344

42. Coilless FM transmitter - 1338

43. 60W Guitar Amplifier - 1314

44. 60W Bass Amplifier - 1314

45. Guitar Amplifier - 1312

46. Simple Op-Amp Radio - 1307

47. Stereo Tone Control - 1289

48. Charge Monitor for 12V lead acid battery - 1285

49. Dome light dimmer for Cars - 1267

50. 10W Mini Audio Amplifier - 1258

51. Capacitor Discharge Ignition Circuit (CDI) - 1257

52. Amplifier 2x30W with STK465 - 1254

53. RF Modem Robotics Project - 1222

54. TRIAC Light Dimmer - 1222

55. 12V Lead-Acid Battery Monitor - 1221

56. Variable 3 - 24 Volt / 3 Amp Power Supply - 1199

57. 3-Axis Stepper Controller - 1189

58. Simple FM Transmitter - 1170

59. CB receiver - 1168

60. Touch Activated Light - 1163

61. Car Battery Charger - 1160

62. 12V Inverter - 1145

63. Composite color video signal travels on twisted-pair cable - 1136

64. Parallel Port Relay Interface - 1129

65. Digital Volume Control - 1127

66. The Video / Audio Distribution Amplifier - 1122

67. 20dB VHF Amplifier - 1099

68. Remote control using VHF modules - 1082

69. Digital Volume Control - 1077

70. AC Line Current Detector - 1076

71. Ultrasonic switch - 1052

72. IR Detector for Robotics - 1052

73. Video to RF Modulator - 1050

74. Rain Alarm - 1048

75. 4W FM Transmitter - 1048

76. Headphone Amplifier - 1043

77. FM transmitter - 1038

78. 25W Mosfet audio amplifier - 1032

79. Car anti theft wireless alarm - 1031

80. 0-30 vdc stabilized power supply with current control 0.002-3 a - 1029

81. 7 Segment LED Counter - 1009

82. Water Level Indicator with alarm - 1007

83. 1W Bass Power Amplifier - 989

84. 4 Transistor Transmitter - 986

85. Simple but reliable car battery tester - 983

86. Digital Voltmeter - 978

87. Dancing LEDs - 975

88. DC to DC Converter - 973

89. Sawtooth wave generator - 969

90. Electronic Thermostat and Relay Circuit - 966

91. 2 Transistor FM Voice Transmitter - 964

92. Isolation between antenna network and TV/radio equipment - 960

93. Radio Remote Control using DTMF - 955

94. 0-50V 2A Bench power supply - 952

95. Video Switch - 950

96. Long range FM transmitter - 939

97. Digital Voltmeter - 933

98. 10W Audio Power Amplifier - 933

99. Surround Sound Decoder - 928

100. 10W Audio Amplifier with Bass-boost - 924