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Saturday, 02-Nov-2024 23:11:06 GMT
Z88 Hardware
EPROM Erasers
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Universal Power Supply
Key points
- Input voltage 90-264
VAC
- Input frequency 47-63
Hz
- Overcurrent protection
All outputs protected to short circuit condition
- Operating temperature
0°C to +70°C, derate linearly above 40°C to 50% @
70°C
- MTBF 100,000 hours
minimum at full load at 25°C ambient
- EMI requirements
Meets conduction limits of (a) FCC PART 15 CLASS B (b) CISPR
CLASS B
- Safety Approvals
UL/cUL60950, TUV/GS (EN60950)
- Size 91mm x 36mm
x 38mm (3.6" x 1.4" x 1.5")
Overview
At last a small lightweight
power supply for your Z88.
The Z88 does
not physically switch to the power supply when being powered
externally. Power from the internal batteries will only be saved if
this power supply is used.The reason behind this is the Z88 runs on 6v, ( 4 x AA 1.5v batteries).
A diode is used in the external supply circuit which drops the voltage
by 0.8v. If the normal 6.5v Z88 Mains adapter is used for example, the
voltage across the batteries will be
6.5 – 0.8 = 5.8v.
The
batteries in the Z88 will be discharging until they reach 5.8v. This is
about half their charge. The Universal Power Supply has an output
voltage of 7v. This gives 6.2v across the batteries which ensures that they hold their charge.
When the Z88 came out
the Mains adapters were built using large and heavy transformers,
forcing users to either leave them at home or having two supplies,
one for home and the other at work. This power supply is
the modern lightweight equivalent .
Use it either in the
USA, Europe or anywhere in the world.
Note: LOW STOCK - will be discontinued
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Ram
Packs |
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Using Ram Packs
with your Z88.
Inserting the RAM
pack into Slot 1 of the Z88
The Z88 comes with
32K RAM 'built-in' memory. This is used both as working memory
and for storing files.
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The Z88's memory can
be expanded in 32K, 128K or 1M byte blocks by inserting a RAM
Pack.
A 1M RAM Pack has
enough room for around 200 typed A4 pages.
If power is lost,
through the batteries going flat or if an application crashes,
any files that or stored in RAM or unsaved current work may be
lost.
Cambridge
Computer The Z88 Card Exchange System (864K) Cambridge
Computer Memory Card booklet (500K) |
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1M Low Power RAM Card
This uses a modern static RAM chip which gives the following advantages:-
- 1M RAM
- Low Power
- Longer battery life.
This is a RAM
pack.
If removed, a HARD reset is required
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EPROM Erasers
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Z88 Dummy EPROM Case
Z88 Dummy EPROM Case
Use
your Z88 EPROM Eraser to ERASE EPROMS.
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The
EPROM is placed in the carrier. When fully inserted into the eraser,
the lamp is turned on.
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The
sides have been removed to allow a 40 pin EPROM to be used.
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Z88
Hardware
Description |
Price |
VAT |
Total |
Cable - Printer (Parallel) |
£34.00 |
£6.80 |
£40.80 |
Cable - Printer
(Serial) |
£5.00 |
£1.00 |
£6.00 |
Z88 Dummy EPROM Case
(Erase DIL EPROMS Using The Z88 ERASER)
|
£8.29
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£1.66
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£9.95
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Card Case
|
£8.66
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£1.33
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£10.00
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PCB
(Blank)
|
£7.00 |
£1.40 |
£8.40 |
Carrying case |
NONE LEFT
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Flash EPROM (1M) |
£45.83 |
£9.17 |
£55.00 |
Flash EPROM (1M) LED Upgrade
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£15.00
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£3.00
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£18.00 |
Flash EPROM (512K) / 512K RAM
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£49.17 |
£9.83 |
£59.00 |
EPROM
Card (32K)
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£16.67
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£3.33
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£20.00
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EPROM Eraser |
NONE LEFT |
EPROM
Card (128K) |
£25.00 |
£5.00 |
£30.00 |
EPROM
Card (256K) |
£49.17 |
£9.83 |
£59.00 |
Rubber Keyboard Mat
NO UK Version LEFT only foreign.
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£25.00
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£5.00
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£30.00
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Keyboard
Membrane
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£20.83
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£4.16
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£25.00
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Mains Adapter (220v) |
£8.95 |
£1.79 |
£10.74 |
Modem 300/1200-software & cable |
NONE LEFT
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Modem Cable?
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£10.00 |
£2.00 |
£12.00 |
Power Supply (90-264v)
|
NONE LEFT
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RAM
pack (1M) (low power)
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£49.16
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£9.84
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£59.00
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RAM pack (1M) (CC)
|
£40.83 |
£8.17 |
£49.00 |
RAM pack (512K) |
£37.50 |
£7.50 |
£45.00 |
RAM pack (128K) |
£20.83 |
£4.17 |
£25.00 |
Cambridge Topper - Heavy Duty Version |
NONE LEFT
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©
Rakewell Limited 1998 - 2024
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Company Details
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