Star Tech Journal
Issue: 1981-September - Vol 3 Issue 7 - Page 6
Modification of One Coin-One Play Machine
Into Two Coin-One Play Machine
byAsraphAII
Single coin operated machine can be modified into two coin operated machine
using Flip-Flops. The fig-1 shows micro-switch connections of the coin
mechanism. The modified circuit for two coins is shown in fig-2.
The flip-flops are used for dividing action. In addition, the
circuit uses a miniature relay which has two normally open
contacts. The first one supplies coin pulse to the machine
and the other one resets the flip-flops immediately
after the coin pulse is supplied.
Into Two Coin-One Play Machine
byAsraphAII
Single coin operated machine can be modified into two coin operated machine
using Flip-Flops. The fig-1 shows micro-switch connections of the coin
mechanism. The modified circuit for two coins is shown in fig-2.
The flip-flops are used for dividing action. In addition, the
circuit uses a miniature relay which has two normally open
contacts. The first one supplies coin pulse to the machine
and the other one resets the flip-flops immediately
after the coin pulse is supplied.
Future scanning projects are planned by the International Arcade Museum Library (IAML).