References BasicElectronics Tutorials. (2017).
Variable Voltage Power Supply Using TheLM317T. online Available at:http://www.electronics-tutorials.
ws/blog/variable-voltage-power-supply.htmlAccessed 20 Dec. 2017.Anusha(2017). LM386 Audio Amplifier Circuit. online Electronics Hub.Available at: https://www.electronicshub.
org/lm386-audio-amplifier-circuit/Accessed 29 Nov. 2017.ElectronicsHub. (2016). How To Make Microphone Preamplifier?.
online Availableat: https://www.electronicshub.org/microphone-preamplifier/ Accessed 23 Nov.2017.Kovachev,D. (2018). LM358 microphone amplifier.
online Low voltage. Mostlyharmless…
Available at:https://lowvoltage.wordpress.com/2011/05/21/lm358-mic-amp/ Accessed 18 Nov.2017.Kovachev,D. (2018). LM386 microphone amplifier.
online Low voltage. Mostlyharmless..
. Available at: https://lowvoltage.wordpress.com/2011/05/15/lm386-mic-amp/Accessed 18 Nov. 2017.RenesasElectronics Singapore.
(2018). Tutorial: ElectronicCircuits-Op-amps/Comparator Circuit, Renesas Engineer School. onlineAvailable at: https://www.renesas.
com/en-sg/support/technical-resources/engineer-school/electronic-circuits-03-op-amps-comparator-circuit.htmlAccessed 6 Jan. 2018.Kovachev,D. (2017).
lm386 audio amplifier | Search Results | Low voltage. Mostlyharmless….
online Lowvoltage.wordpress.com.
Available at: https://lowvoltage.wordpress.com/?s=lm386+audio+amplifierAccessed 28 Nov. 2017.
