What Else is Inside the Fish???

[Patrick]

Other than the transducers, what else is inside of the fish?


Also, how much power do you think will be required to operate the system?


Patrick

[Jan]

Re: What Else is Inside the Fish???

Patrick,


The electronics will be Transducer driver, echo receiver/amplifier, digitizer and communication.


Do not know yet the voltage on transducer but electronics work on +5V. (4.75V-5.25V)


So for battery you need at least 8 Volt, as regulator has about 3V Voltage drop over them.


Best is to take regular 12V battery.


Offhand(!) I would think we need about 1-2A for electronics when using CMOS (I will) or 2-3A when using TTL.


Again, this is just an educated guess.


I am using a 12V/7Ah ledgel battery.


These batteries can be bought everywhere, I bought mine (as batch of 4) at a shop selling radio controlled for about $12.50 each.


However, they may be a bit to large for your fish, size wise.


Charge circuit for them is very simple, have some schematics if you need them.


Regards, Jan.