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Posts tagged Tube schematic diagram

25W Audio Amplifier with Tube schematic diagram

25W Audio Amplifier with Tube schematic diagram 25W Audio Amplifier with Tube schematic diagram Here the 25 watt power audio amplifier circuit powered using tube circuit. The tube TR will amplify the input about 20 watt, dual Trafo should be gain up to 40w watt. You can use wide voltage range 12v – 20V to […]

Battery Charger circuit diagram

Battery Charger circuit diagram using PICAXE-08, 1N4004, BC338, 78L05, 7812

Nikon gps circuit

Nikon gps circuit Nikon gps circuit There are also versions elsewhere on the internet that utilise bluetooth serial modules to allow the GPS to remain in a backpack completely out of the way – either more expense or more complicated DIY though I’d have thought. Looking at the wealth of similar projects on the net […]

SCR circuit

SCR circuit for Time Switch R1 ………….. 15K ohm R2 ………….. 600 ohm R3 ………….. 4,7K ohm R4 ………….. 22K ohm R5 ………….. 68 ohm C1 ………….. X C2 ………….. 47uF – 25V C3 ………….. 0,1uF – 600V TR1-TR2 ……… 2N5306 SCR …………. 2N4444 PS ………….. Puas Switch D1 ………….. 1N – 4003

Preamp mic schematic and Audio Megaphone

Preamp mic schematic and Audio Megaphone using BC547, TDA7052 P1_____________22K R1_____________22K R2,R3_________ 100K R4_____________47K R5______________2K2 R6______________6K8 R7_____________22K R8______________2K7 C1,C6_________ 100nF  63V C2,C3__________10µF  63V C4_____________22µF  25V C5_____________22nF  63V C7____________ 470µF  25V Q1_ BC547 IC1 TDA7052 SW1____________SPST MIC____________electret microphone SPKR___________8 Ohm Loudspeaker

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