The following scheme is a courtesy light circuit you can use to delay an electronic device to be disabled. For example, you can connect this circuit to the lamp in…
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Echo Chamber
…mp3 player, etc). The echo chamber circuit is great for human voice (karaoke), i doesn’t needed for music sound. This circuit is quite complex with some number of components used…
5W Simple Inverter
…circuit for electronic appliances which consume high power, of course it will not works. You may use 12V lead acid battery for this circuit. 5W simple inverter circuit source: http://skemarangkaian.com/5w-simple-inverter-circuit-with-2n3055/…
M66T Melody Generator
…a compact melody module can be constructed with only a few additional components. M66T Pin Assignment: Pin 1 (O/P) Melody Output Pin 2 (Vdd) Positive Power Supply Pin 3 (Vss)…
Switched ON Bike Lamp
…to know your presence. Switched ON Bike Lamp circuit diagram: Component part list: R1 = Photo resistor (any type) R2 = 22K 1/2W Trimmer Cermet or Carbon type R3 =…
Simple Metal Detector based CS209A
…with a couple of tests outside, it appears the coil requires a Faraday Shield. Simple Metal Detector PCB Design Complete explanation including the circuit board and PCB overlay, visit: chemelec.com…
5V Regulated Solar Cell Power Supply
…An example is information logging, exactly where the micro is active for short periods of time, then goes into “sleep” mode. 5V Regulated Solar Cell Power Supply circuit source: talkingelectronics.com…
1000W Power Inverter
…volt Zeners stabalize supply voltages and limit signals, while the 36 volt Zeners limit spikes from the transformer. 1000W Power Inverter PCB Layout Design: 1000W Power Inverter circuit source: chemelec.com…
Solar Powered Mobile Phone Battery Charger
…Schottky diode Q1 : 2N4403 , or equivalent Q2 : 2N4401 , or equivalent B1 : Ni-Cad battery, 6V with fuse Solar powered mobile phone battery charger circuit source: PowerSupply88.com…
Stereo Tube Amplifier 4 Watts
…A choke coil in its place would give much better performance and extra closely resemble the electromagnet field within the prototype. Stereo tube amplifier 4 Watts, design diagram source: wkinsler.com…